The "Hitchhiker's Guide" to the Maxi-Stream mod

[JohnL]

This thread was automatically split due to performance issues. You can find the rest of the thread here: http://archive.reefcentral.com/forums/showthread.php?postid=8510952#post8510952

[dhnguyen]

Ah heck I'm probably gonna order all 3 and try them out anyway. Just because I'm a dork more than anything :lol:

I also emailed JBJ asking about the wattage ratings on them.


D.

[Snarkys]

ok what number split is this ?

[Snarkys]

<a href=showthread.php?s=&postid=8510954#post8510954 target=_blank>Originally posted</a> by dhnguyen
Ah heck I'm probably gonna order all 3 and try them out anyway. Just because I'm a dork more than anything :lol:

I also emailed JBJ asking about the wattage ratings on them.


D.

I just ordered mine : )

[dhnguyen]

<a href=showthread.php?s=&postid=8511273#post8511273 target=_blank>Originally posted</a> by Snarkys
ok what number split is this ?


dude I gave up counting the splits long ago :)

Also did you order all 3 versions of the pump?

[Snarkys]

ya . mainly because they are different dimensions.

you should order them too : )

mine should be here by monday because im so close to PA.

[mfinn]

I tried some of those jbj dual outlet powerheads and found them lacking. I wish I knew you were going to order some, I would have sent you a couple used ones.
Maybe you can do something with that powerhead to make it usable

[dhnguyen]

YGPM Martin :)

[dhnguyen]

AHA... I got a response back from JBJ


"The sp-1300 is 18watt with 240gph, the sp-1800 is 25watt with 290gph, and the sp-2500 is 32watt with 530gph. Also any pumps can be used with a protein skimmer, as long as the flow rate is correct. If you have any further questions please email or contact our customer support line and someone will further assist you on this matter."


So far so good :D a bit higher power draw than MJ1200 but not too much.

[dhnguyen]

I just ordered them by the way. Very curious to see how the SP-2500 can be modded. At 530gph stock, this thing could be a monster once modded :D

[miatawnt2b]

Well, I attempted to drill the center of the MJ magnet in order to make the hole more centered. It was a futile attempt. I ended up breaking the magnet in two pieces. That really jacked me off since I don't have a spare laying around. This project is starting to cost just as much as a couple of SEIO 1500's. (as most DIY projects do) Though I think that If I can get these to work silent, I'll be better off than with the SEIO's anyhow. Restart problems, and just the general expence if a coil burns out make the MJmod a better option... If I can get it working to my expectations and don't have to fiddle with it every 2 weeks.

Anyhow, I epoxyed the magnet back together (It's probably stronger now than it was before) and I need to wait for it to cure and I will drill the center for the shaft, and carefully epoxy the CF tube directly on the top of the magnet. It should be fine as long as I am very careful to get the whole thing centered just so.

Has anyone found a source for tubular magnets like this. It would be nice to not have to buy the whole MJ impellor assembly when a dummy like me decides to go medieval on the magnet.

OK, next thought. Who thinks that the shrowds on the MJmods are entirely too long? I think that the longer the shaft, the less tolerant this mod is for errors in balance and centering. So I had thought after making the one I am working on now at a standard length, I would try to make a new shrowd about 1/2 the size of the large ones that come with the 1200 MJmods. I know that the smaller shrowd may limit flow a bit, and I am definitely going to have to increase the size of the inlet slots, but a shaft and propellor assembly that is 1/2 the length should be much more stable. That's my theory anyhow.

-J

[miatawnt2b]

BTW...
I'm all ears if anyone has a good idea for making sure the CF tube is completely centered when I epoxy it to the magnet.
-J

[miatawnt2b]

yep, i'm slow... I didn't know that mjmods was selling a small high flow shrowd now. looks nice.
-J

[dhnguyen]

It would probably be better for you to just buy a new impeller instead of gluing that back and re-drilling it. Impellers aren't that expensive to begin with.

I also don't think it's a good idea to drill the magnet either as you have found out, it is very brittle and will break quite readily.

From my own experience the MJ400 and MJ600 magnets have perfect circular holes that are centered while the MJ900 and MJ1200 have somewhat oval holes instead. The holes maybe oval but they should still be centered so there really should not be any need for drilling IMO.

[dhnguyen]

By the way for all intents and purposes, the original build method of using the flex airline tubing to connect the magnet to the propeller still works just as well as the new "tube in magnet" build. Just be sure to remember to use the black airline tube that came with the original Maxijet instead of the clear airline tubing and you should be fine. With the original build, it is the clear flex airline that eventually stretched, gave way, and failed whereas if you're using the black tube this won't happen.

So instead of pulling out your hair trying to drill the magnet :) I would suggest trying the original "simple" build first.

Just my 2 cents.

[reefkeeper1]

Anyone do a test yet of a Maxi-jet Mod vs. the Nano Stream 6025?

[dhnguyen]

I don't have access to a nano-stream otherwise I would

Wanna loan me yours? :D

[reefkeeper1]

I don't have a Stream Nano 6025, but at a price of around $60 for the Nano 6025, I'm wondering whether it's worth the time to do the Maxi-Jet Mod. I do have a lot of Maxi-Jet 1200s, but you should see all the DIY reef stuff I already have in my garage ;)

[miatawnt2b]

<a href=showthread.php?s=&postid=8518496#post8518496 target=_blank>Originally posted</a> by dhnguyen
From my own experience the MJ400 and MJ600 magnets have perfect circular holes that are centered while the MJ900 and MJ1200 have somewhat oval holes instead. The holes maybe oval but they should still be centered so there really should not be any need for drilling IMO.

hummmm... are the 400/600 magnets the same as the 1200, and will they spin a dumas 3004?
-J

[Rothie]

The 6025 Tunze nano stream only puts out 660GPH

[RichConley]

<a href=showthread.php?s=&postid=8518625#post8518625 target=_blank>Originally posted</a> by reefkeeper1
I don't have a Stream Nano 6025, but at a price of around $60 for the Nano 6025, I'm wondering whether it's worth the time to do the Maxi-Jet Mod. I do have a lot of Maxi-Jet 1200s, but you should see all the DIY reef stuff I already have in my garage ;)

We're talking 600gph vs 2000. Theres no comparison.

[mfinn]

The 6025 puts out 1189 gph, according to the info at Premium Aquatics


http://www.premiumaquatics.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=T6025.000&Category_Code=Tunze_pumps

[mfinn]

I just reread the specs and I was wrong.




Nanostream Design is much more than only styling of existing products: It is the expression of an idea and a concept; it opens one's eyes. Turbelle nanostream combines aesthetics and function. This innovative circulation pump sets new records: At a diameter of only 70 mm it enables a water flow of 4,500 l/h (1,189 USgal./h) at an energy consumption of only 8 W. The pump includes a very large strainer for the intake which prevents premature soiling. The spherical shape permits an ingenious 3D setting of the direction of flow. As a standard feature, Turbelle nanostream is supplied with a magnetic holder, which enables uncomplicated attachment at any position on the aquarium pane. The speed of the Turbeller nanostream 6055 can be controlled by a Singlecontroller or a Multicontroller; in addition, they have been provided with a fish care function in case of motor standstill. 6025 & 6045 are not controllable.

Turbeller nanostream 6025
For aquariums from 40 to 200
litres (11 to 53 USgal.)
Flow rate: 2,500 l/h (660 US gal./h)
Energy consumption: 7 W
Voltage / frequency:
110V/60Hz (115V/60Hz)
Cable length: 2 m (78.7 in.)
Dimensions: diam. 70 mm (2.7 in.),
outlet: diam. 40/15 mm (1.5 / .59 in.)

[miatawnt2b]

uhhhh....

At a diameter of only 70 mm it enables a water flow of 4,500 l/h (1,189 USgal./h) at an energy consumption of only 8 W

Flow rate: 2,500 l/h (660 US gal./h)
Energy consumption: 7 W


???????

I'm thinking the 6045 is the 1189gph version

[reefkeeper1]

Yeah, it's the 6045 that pumps out 1189 gph, but it's about $100. The think I really like about the nanostreams are these two features:

1. The flow looks like it can be easily directed in a wide directional range. I've had to jury-rig my Stream 6000 series mounts to direct their flow upwards.

2. The magnet comes with the nanostreams.

But I'll probably try out a Maxi-Jet mod just to see the performance.

[dhnguyen]

Personally if I was getting Nano-Stream I would go for the 6055 controllable one and a controller. Otherwise it's really not worth it IMO.


D.

[twon8]

i had built three mods using the smaller shroud, and while impressed with the performance, recently i made one using the bell housing and a dumas 3004 and the flow imo exceeds a stream 6100 on full blast. kudos to the inventive minds behind this.

[Malifluous]

<a href=showthread.php?s=&postid=8518543#post8518543 target=_blank>Originally posted</a> by dhnguyen
By the way for all intents and purposes, the original build method of using the flex airline tubing to connect the magnet to the propeller still works just as well as the new "tube in magnet" build. Just be sure to remember to use the black airline tube that came with the original Maxijet instead of the clear airline tubing and you should be fine. With the original build, it is the clear flex airline that eventually stretched, gave way, and failed whereas if you're using the black tube this won't happen.

So instead of pulling out your hair trying to drill the magnet :) I would suggest trying the original "simple" build first.

Just my 2 cents.

I have been folowing this thread for a long time. All my maxis have been moded with the old style using tubing. I would like to try a mod without using felx tubing. Can someone briefly explain how the rigid tubing gets connected directly to the impellor? Do i bore out the impellor side and slide the rigid tube inside? TIA

[twon8]

you break the plastic thing holding the magnet and glue it onto the carbon fiber or plastic rod.

there are great directions on this page, impellor is about halfway down the page.

[quangtam7]

Here is the stopper that I designed to mount on the rod. Since is it close to the center of the shaft, the impact is low thus damage to the blade is significantly reduced
http://i2.photobucket.com/albums/y12/quangtam7/stopper1.jpghttp://i2.photobucket.com/albums/y12/quangtam7/stopper3.jpghttp://i2.photobucket.com/albums/y12/quangtam7/stopper2.jpg

Same design but easier to make
http://i2.photobucket.com/albums/y12/quangtam7/stopper4.jpghttp://i2.photobucket.com/albums/y12/quangtam7/stopper5.jpg

[Snarkys]

OK as to be expected these jbj pumps are like carbon copies of a MJ

the 1300 is a bit smaller than the MJ, the 1800 is a bit bigger and the 2500 is quite a bit larger.

the wattage draw is a bit higher but the magnets are substantially larger also. the mounts are different diameters on all three .

I think the big one could push some serious water . bonus of these basically all in the price . $10 and $20 for the big one . I'm guessing the big one would do 3,500 - 4, 000

have to look into how to attach the tube. i just got it so I'm not sure.

[Snarkys]

<a href=showthread.php?s=&postid=8531753#post8531753 target=_blank>Originally posted</a> by quangtam7
[B]Here is the stopper that I designed to mount on the rod. Since is it close to the center of the shaft, the impact is low thus damage to the blade is significantly reduced
http://i2.photobucket.com/albums/y12/quangtam7/stopper1.jpg

looks nice . i bet you could get by with only one peg if ya wanted to.

[Snarkys]

<a href=showthread.php?s=&postid=8536126#post8536126 target=_blank>Originally posted</a> by Snarkys
OK as to be expected these jbj pumps are like carbon copies of a MJ

the 1300 is a bit smaller than the MJ, the 1800 is a bit bigger and the 2500 is quite a bit larger.

the wattage draw is a bit higher but the magnets are substantially larger also. the mounts are different diameters on all three .

I think the big one could push some serious water . bonus of these basically all in the price . $10 and $20 for the big one . I'm guessing the big one would do 3,500 - 4, 000

have to look into how to attach the tube. i just got it so I'm not sure.

btw when I get a chance i will pull them apart and take some pics

[dhnguyen]

Cool beans Snarkys. I'll be getting mine in some time next week as well. It would be really cool if the same shroud on the MJs will fit these :D Or if the standard PVC pipes will fit them.

That SP-2500 version does seem like it would be able to move some seriopus water especially coupled with larger props. A good thing I have a few larger Octuras lying around to test this :D

[Snarkys]

none of them are the same size as a MJ so something else will have to be used . when i get a chance i will try a few different things.

[vanceny]

ok, this is my second maxijet mod. It was working great but now it constantly hits the stopper and jumps back and forth. What could that be? Does the impeller need to be replaced? It is somewhat old.

Thanks for the help.

[Chrismo]

quangtam7: I like that stopper.

[vanceny]

Here's a little more info on my problem.

I'm using the medium flow kit from mjmods. This has the octura 1435 prop using the cf tube and ss rod.

Originally I placed the prop up close to the front so that about 1/2 of the prop could be seen from the slits in the shroud. It worked fine for about a day. No noise.

Next day I heard jumping back and forth. It would run fine for about 10 seconds and then reverse direction, slam into the stopper and then run fine again. Wasn't sure what the problem was but i remember reading that maybe the prop was too far forward. I hacked up the prop and installed a new one further back. Now its worse. It just jumps back and forth and doesn't settle in the right direction.

I think I have the prop installed in the correct position with the notches facing down towards the pump. Also this is on a MJ900.

Any ideas? All the parts are glued on except for the prop. That I can adjust abit but I've tried moving it up and down but it doesn't seem to help. Only other thing I can think of is the mj/impeller is old.

[quangtam7]

Thanks, here is stopper that I made to use on the prop with cf tubing that is glued to the magnet, real quiet. Prop has to be removable to use this stopper, but that is not hard if you have a drill press.
http://i2.photobucket.com/albums/y12/quangtam7/stopper6.jpg
http://i2.photobucket.com/albums/y12/quangtam7/stopper7.jpg
http://i2.photobucket.com/albums/y12/quangtam7/Stopper8.jpg

[dhnguyen]

<a href=showthread.php?s=&postid=8551869#post8551869 target=_blank>Originally posted</a> by vanceny
Here's a little more info on my problem.

I'm using the medium flow kit from mjmods. This has the octura 1435 prop using the cf tube and ss rod.

Originally I placed the prop up close to the front so that about 1/2 of the prop could be seen from the slits in the shroud. It worked fine for about a day. No noise.

Next day I heard jumping back and forth. It would run fine for about 10 seconds and then reverse direction, slam into the stopper and then run fine again. Wasn't sure what the problem was but i remember reading that maybe the prop was too far forward. I hacked up the prop and installed a new one further back. Now its worse. It just jumps back and forth and doesn't settle in the right direction.

I think I have the prop installed in the correct position with the notches facing down towards the pump. Also this is on a MJ900.

Any ideas? All the parts are glued on except for the prop. That I can adjust abit but I've tried moving it up and down but it doesn't seem to help. Only other thing I can think of is the mj/impeller is old.



the prop jumping back and forth is typically a clear indication that the propeller maybe a bit too much for the impeller and/or pump.

Try sanding or cutting down the propeller (reducing the diameter) a bit, it'll help. Either that or get a new impeller.


D.

[vanceny]

Thanks for the tip. Does changing the impeller make the mj work like new or would it be better just to get a new mj?

[vanceny]

Also another thing does it matter which impeller i get? can I use the 1200 on a 900? I know this was answered before but i cant find it.

Thanks again.

[Snarkys]

they are all the same 600-1200.

[vanceny]

So will replacing the impeller be enough to restore full function on the mj? Do the mj housings degrade in performance? or is it more like works until it breaks.

[twilson2003]

Just an FYI - I modded two MJ 1200's when this dhnguyen first started this post, and still after about 6-7 months if not more with the original list of goods, and methods, they still work like a champ...

I havent been to this and from what I can see there have been ALOT of advances...But that being said...Are any of them real improvements on the "original"???

Good Luck!

[dhnguyen]

Ok I just got my JBJ pumps this morning. First impression is that they are just like the MJs in shapes and design albeit cheaper.

The smallest model SP1300 (240gph @ 18w) is a bit smaller than the MJ. The next size model SP1800 (290gph @ 25w) is a bit larger then the MJ by about 1/2 inch. The largest model SP2500 (530gph @ 32w) is larger still (about twice the size of the MJ).

Somethings that I do like right off.

1. They have somewhat a fixed shaft (although it is removable) just like the AquaClear pumps so this would make modding them very easy and cut down alot of noise problem. There appears to be a thrust washer installed in there as well.

2. They seem to run much quieter than MJs stock.



Now the bad things and not neccessarily "bad" per se.

1. The diameters of the impeller/mganet port on the various models are all different sizes. They are also not the same size as what we have been using for the MJs so it may take a bit of work to find the right sized pipe to fit these.

2. No way to remove the impeller head other than to cut it off or break the tube and do the tube in magnet build. Not neccessarily a "bad" thing it just mean a bit more work.

3. The shaft sizes appear to be varied in the various models as well.

I'll have more time look into these later this weekend.

[RichConley]

Awesome, thanks D, I've been looking for some fixed shaft cheap pumps for a different project, so this could be helpful (NW with bigger shroud)

[RichConley]

D, do the JBJ's have the same flat housing as the Maxis? IE the completely removable volute?

[dhnguyen]

Yes

[DWS]

Wow, wow. I just added two mjmods medium flow kits, and my tank looks 100 times happier! As Marv Albert would say, Yesh! I made one with the carbon sleeve/stainless, and one plastic tubing/stainless.

I want to share how I solved the problem of the prop not fitting snug on the assembly, the least I can do. I have always used baking soda to instantly cataylize superglue, and it worked well in this mod.

On both the plastic and carbon tubing, I coated the end where the prop would sit with super glue, moving it around with my finger to create a thin smooth coating. Once it was smooth and not beading, I dusted it with baking soda, which dries it rock hard instantly. This biult up the tubing enough for the prop to slide on snug. I also sprinkled baking soda on all the glue points, so I could put the thing is service right away.

[miatawnt2b]

Man, I wish I could make a silent one... maybe I am just too picky. The last mod I tried I was super careful to get everything perfectly centered, though I think the epoxy putty I used may be off balance a bit... I just haven't sanded it perfectly true yet.

-J

[Cuervo]

I had one that was making quite a bit of noise. I could actually see it wobbling inside the tank. I planned to fix it, but just haven't gotten around to it. It seems that over a period of about 3 weeks it has pretty much corrected itself.

I'm not sure if something inside it was rubbing, or maybe it got a slime coat, it has some algae growing on it.. whatever it is, the wobbl has almost completely gone away and now it's nearly silent.

[miatawnt2b]

yea, I'm almost positive it's just a balance issue. I also like the new version of MJmod shroud that uses the bushing on both sides of the rod. I'll bet that cuts down on the vibrations a bit if the prop/magnet assembly is just slightly off. I wish I was a few weeks later in ordering my mod as I think I was one of the last to get the old shroud.

-J

[dhnguyen]

Did you try to balance the propeller? This can help cut down on the noise a lot IME.

D.

[dhnguyen]

So I was on my lunch break and decided to measure the diameter of the JBJ SP1800 pump's volute/shroud/housing or wahtever you call it. It's an exactly fit of the ID of a regular SCH40 1.5 inch PCV pipe :D

You will need to remove the rubber O ring as with the MJ but it will fit the SCH40 1.5 pipe perfectly.

We have another pump to play with now folks :D

[david335]

Dnguyen,

Can you open the pump and take a picture of the shroud & the impeller?
TIA

[dhnguyen]

when I get a chance this weekend and if the wife isn't hogging the cam, I'll snap some photos of these.

[rsxs1212]

OK well i was going to go through the whole thread to find them but after i saw how long it was i decided against it.. im sure by this point and you being asked many times i need the directions to make it. the v.2 i think from mjmods.com,, their server went down and directions for it are one thing that isnt up there.. its the one with the black shroud and its the high flow kit for mj1200. ordered it wednesday and got it today so im about to put it together and directions arent there!! maybe email them to me at rsxs1212@tampabay.rr.com if you dont want to take up the room on this thread, or if you have a link to other directions that would be great as well

thanks in advance

[accord86]

I'm in the same exact situation as rsx.

I ordered and recieved mine this week and decided to put it together today. jdm_powerd@yahoo.com

[rsxs1212]

well i just decided to try to make my own impeller assembly based off pictures i saw on this forum.. i got one that should work, im letting everything cure overnight so i guess we willl see tomorow afternoon if it works or not.. i figure that it came with enough of everything that if this way doesnt work i can always do it the way they show

[dhnguyen]

Did you guys look here instead for instruction? It should give you some ideas as to how the kit can be put together.

http://www.reefchili.com/MJmods.html

I think mjmods.com site is going through some upgrade.

[Snarkys]

<a href=showthread.php?s=&postid=8578815#post8578815 target=_blank>Originally posted</a> by dhnguyen
Did you guys look here instead for instruction? It should give you some ideas as to how the kit can be put together.

http://www.reefchili.com/MJmods.html

I think mjmods.com site is going through some upgrade.

I was trying to mod the site with a higher flow shipping labels to save me some time and instead i broke the site : )

ended up doing a fresh install . should be back and better than ever by the end of the day .

[dhnguyen]

:lol: DIY can stand for Destroy It Yourself too I guess Snarkys.

Rule number one in programming, always have a backup before you make a change ;)

[Snarkys]

i normaly learn the hard way the first time : )

[dhnguyen]

<a href=showthread.php?s=&postid=8579086#post8579086 target=_blank>Originally posted</a> by Snarkys
i normaly learn the hard way the first time : )


we all have at one point or another I'm sure :)

[Malifluous]

Who first invented the mj mod?

[dhnguyen]

The MJ mod is a rendition from the same mod that was done on another pump a long time ago. Ever heard of a Reeftec?

http://www.advancedaquarist.com/issues/june2002/review.htm

In fact it appears that this is also where Tunze got their idea from as well.

A quote from that review:

"The idea of using a propeller came from a science project book (Build Your Own Underwater Robot by Harry Bohm and Vickie Jensen) that used modified bilge pumps to power and navigate an underwater ROV. (Craig Bingman commented about using propellers in a reef tank in 1997 and 1998 Aquarium Frontiers columns) "

[jvschlegel]

Just jumped on board. Was about to buy $800 worth of Tunzes I don't have the money for, until I saw this mod. Bought enough supplies to mod 6 MJ's for $22 shipped to my door. Been reading on this all day while watching football.

Jon

[gary faulkner]

So baking soda will cure the superglue jell at once.

Are there any draw backs to using this method?

Any one else tried this?

TIA

[Snarkys]

I use the glue accelerator that you can get at the hobby store or you can get a reef label on it : )http://www.bostonaquafarms.com/default.aspx?page=products&prod=accel

only down side is it gets really hot . I got some on the power cord once and it melted through , i didn't notice until i put it in the tank and zapped myself : (

[gary faulkner]

Thanks Snarky,
I think I will try the baking soda and see how it works.
My new mod should be arriving tommorrow.
I got the new med. flows this time. Hope it works for me. I have been having problems with the larger props. This should solve my problems, I hope

Thanks again for your help.

[DWS]

So baking soda will cure the superglue jell at once.

Any superglue, yes. Once it is sprinkled on, the superglue/baking soda combo will become a rock-hard mass in seconds, fully cured and dry. The bond is MUCH stronger than just superglue alone too!

I just made a dumas 3004 prop assembly, to replace the octura one I made. I slicked the end of the carbon rod with superglue and sprinkled baking soda to build it up. Next I snugly wiggled on the prop, hit both notches with a dot of superglue, sprinked with baking soda. ...placed right in the tank and running like a champ.

[ThaNgBOm321]

hi hi. i finally got my MJ stream up and running. thx all that posted in this tread. i moded a mj900 w/octura 1435 prop and wow this thing is awsome. anyhow im here to share a few thigs i did to my mod . first off the hole i drilled to the end of my shroud ( where the rod/shaft go through) was a little off so i too a staw and super glued it into the hole and made the hole a snugg fit for the rod, second the thing kept sucking in a vortex of air so i got a empty water bottle and cut a 1.5''x 2'' out of the bottle ( the shrip is like a 'c' when cut out ) and just placed it on the top 1/4 of the shroud. it stay there by itself due to suction , this thig makes the prop pull water out from the bottom and not the top ridding of the vortex. ( it's just a simple and easier fix to the 'vortex shield' someone made a while back.

[ThaNgBOm321]

hi hi. i finally got my MJ stream up and running. thx all that posted in this tread. i moded a mj900 w/octura 1435 prop and wow this thing is awsome. anyhow im here to share a few thigs i did to my mod . first off the hole i drilled to the end of my shroud ( where the rod/shaft go through) was a little off so i cute a staw and super glued it into the hole and made the hole a snugg fit for the rod, second the thing kept sucking in a vortex of air so i got a empty water bottle and cut a 1.5''x 2'' out of the bottle ( the shrip is like a 'c' when cut out ) and just placed it on the top 1/4 of the shroud. it stay there by itself due to suction , this thig makes the prop pull water out from the bottom and not the top ridding of the vortex. ( it's just a simple and easier fix to the 'vortex shield' someone made a while back.

[gary faulkner]

Hey whats up? Instructions are not on the site anymore. Just got my newest mod from MJMODS.COM. Has stickers that say go to website for instructions.

Any help, Snarky?

[Rustylugnuts]

I love browsin through the DIY section and finding projects like this. One quick question. What type of prop would be good for a mj 400. I would love to tinker with and get around 500 gph ea on a couple mj streams for a 29 gal.

[Rustylugnuts]

or would it be better to plumb a CL on on a mag5

[Rustylugnuts]

K did some reading on some more previous posts and it looks like the 2 would be way overkill for a 29. Anybody think that 1 modded mj400 w/a mild to moderately sanded down prop work ok? (any suggestions on which prop to use?)

[Rustylugnuts]

"READ THE WHOLE THING BEFORE YOU TYPE!!!! AYE YI YI!!!!"
Monkey_Bone

looks like its all there :reading:
guess ill be in for a long read i vote we carve up a condensed version and make it a sticky! :jester:

[dhnguyen]

<a href=showthread.php?s=&postid=8588198#post8588198 target=_blank>Originally posted</a> by Rustylugnuts
...carve up a condensed version and make it a sticky! :jester:


When you find out how to do that let me know :)

As for the MJ400. Your best bet is a Dumas 3002 propeller (1.25" diameter)


D.

[Rustylugnuts]

TYVM!:dance: Glad i have a buddy who will let me hijack his woodshop fulla tools

[effect]

Looking to do two of these in my 90 gallon megaflow when I set it up, and want to go bare bottom this time. Would two of the high flow kits for the 1200 off MJ mods along with around 6-700 GPH through the sump/fuge be enough flow. I don’t see why not just want some feed back.:D These look like a good alternitive to a closed loop.

[dhnguyen]

depending what you keep in that 90g, 2 MJ1200 high flo kits most likely would be too much IMO.


D.

[RichConley]

<a href=showthread.php?s=&postid=8588558#post8588558 target=_blank>Originally posted</a> by dhnguyen
depending what you keep in that 90g, 2 MJ1200 high flo kits most likely would be too much IMO.


D.

WUSSES.

I've got 2 1200 high flow bell housing kits, and 1 900 octura 1435 kit in my 58 gallon.

[dhnguyen]

yeah but you're insane Rich we all know that :lol:

[twon8]

<a href=showthread.php?s=&postid=8588649#post8588649 target=_blank>Originally posted</a> by RichConley
WUSSES.

I've got 2 1200 high flow bell housing kits, and 1 900 octura 1435 kit in my 58 gallon.

are any of the pumps on a timer/wavemaker/controller?

if not that is just ridiculous, somewhere approaching 150x in tank turnover

i am confident that these move at least 3500 gph, and likely more than that. when holding it underwater it pushes back way more than a 6100.

here is what marvin said about the 1200 w dumas 3004 i placed into his 125g frag tank that has 6100's on each end
<a href=showthread.php?s=&postid=8582870#post8582870 target=_blank>Originally posted</a> by Atlantis Aquariums
It definitely blew away the 6100 that Anthony placed it beside. Without having any proof I believe the one Twon had was pretty much equal to a 6200. Then again it is not controllable and costs about $400 less..... Just my initial impression and look forward to playing around with more.

Marvin
a friend of mine, vince, has a 600 gallon reef tank, he has been keeping reefs since 1990. the tank has 2x 6200's and he put it into his 600 gallon right next to a 6200 and he had his hand going back and forth, comparing them and he thought that it was at least equal to the 6200. it puts out a lot of flow, in a very wide pattern.

[twon8]

<a href=showthread.php?s=&postid=8588479#post8588479 target=_blank>Originally posted</a> by effect
Looking to do two of these in my 90 gallon megaflow when I set it up, and want to go bare bottom this time. Would two of the high flow kits for the 1200 off MJ mods along with around 6-700 GPH through the sump/fuge be enough flow. I don’t see why not just want some feed back.:D These look like a good alternitive to a closed loop.

I think two would be a tremendous amount of flow if your bb, but not needed till things grow a bit imo. I feel that you would be fine with one modded for now, and you could put a cut nozzle maxijet on a timer to add some randomness and change to the flow. in a few months add a second mod.

I would go with much less gph from the return, somewhere around 200gph is plenty.

[onetrickpony]

Has any one used a Pentair quite one 800 pump for a prop mod

Patented Uni-Direction impeller eliminates need for noisy mechanical device.
This allows the pump to always turn in the correct direction immediately.
http://www.pentairaquatics.com/products/detail/quiet_one/Q1_800.html

Thanks
Ken

[effect]

Thanks for the ideas. The tank for a while will be only rock and reef safe fish. After that few softies and some SPS. I may put these on a timer and have them alternating on and off every 6 hours; tidal flows??. Just want it right this time. Moving tank into my new house(new to me:) ) and last time I had it set up with a wetdry and 5 power heads in it. And a sand bed.

[coreno16]

Have any of you guys painted your mjs black with a product like krylon fusion to match the new style shroud? I'm wondering how it would look before I go out and paint these.

- Cory

[dhnguyen]

It would look fine.

[RichConley]

<a href=showthread.php?s=&postid=8590452#post8590452 target=_blank>Originally posted</a> by twon8
are any of the pumps on a timer/wavemaker/controller?

if not that is just ridiculous, somewhere approaching 150x in tank turnover

i am confident that these move at least 3500 gph, and likely more than that. when holding it underwater it pushes back way more than a 6100.

Whats a wavemaker? :-P


Nope, just all running constantly. I'm thinking about putting the 900 on a wavemaker/timer though.

[twon8]

<a href=showthread.php?s=&postid=8599227#post8599227 target=_blank>Originally posted</a> by RichConley
Whats a wavemaker? :-P


Nope, just all running constantly. I'm thinking about putting the 900 on a wavemaker/timer though.
i had to take out the dumas 3004 driven 1200 out of my 90 to put two 900 driving a 1435; with the 6100 in there already i wanted more flow sources than the super flow of the 1200 with dumas would allow.

[JMBoehling]

Twon,

Think (02) 3004's in my 90 will be too much flow? I am replacing my Seio1500's.. Just ordered my (02) 1200 MAXI'S...

[RichConley]

JMBoehling, if you're BB, and mostly SPS, I wouldnt worry about it.


They move drastically more water than those 1500s do, though.

[Snarkys]

not sure if this is everywhere but the ace hardware near my house is giving away rotary tools for free the day after thanksgiving. They are $9.99 with a $9.99 rebate.

not bad if ya don't already own one.

[Malifluous]

<a href=showthread.php?s=&postid=8588323#post8588323 target=_blank>Originally posted</a> by dhnguyen
When you find out how to do that let me know :)

As for the MJ400. Your best bet is a Dumas 3002 propeller (1.25" diameter)


D.

How does one connect the Dumas 3002 to a MJ? The ID of the Dumas is so small that you can barely get the rod thru it let alone any rigid tubing.

[Snarkys]

i have never figured that out either : )

[hahnmeister]

I have bored out the center with a 3/16" drill bit, and then cemented the prop to the shaft, FWIW. You are correct, the shaft on the 3002 is a little bit too small.

[Snarkys]

the smaller octuras are just big enough to go over the .180 CF tube when drilled out . not sure if they would work with the airline or .188 tube.

[hahnmeister]

I barely fit a bunch over airline tubing. BARELY. Its almost like the airline shaft is what is holding the prop blades together... but once its superglued, it is strong.

[dhnguyen]

the Dumas 3002 will hold just fine if you drilled out the shaft hole to 3/32". I've been doing that for a couple years now, in fact my very first MJ mod was done with this prop.


D.

[twon8]

<a href=showthread.php?s=&postid=8599915#post8599915 target=_blank>Originally posted</a> by JMBoehling
Twon,

Think (02) 3004's in my 90 will be too much flow? I am replacing my Seio1500's.. Just ordered my (02) 1200 MAXI'S...



as long as you have somewhere to point them, you should be fine, just be prepared for a dramatic upswing in flow.

[maxvan1]

<a href=showthread.php?s=&postid=8588558#post8588558 target=_blank>Originally posted</a> by dhnguyen
depending what you keep in that 90g, 2 MJ1200 high flo kits most likely would be too much IMO.


D.

Wow... I was thinking of putting two of those in a 29G. Maybe not?

[dhnguyen]

I wouldn't if I were you. For a 29g tank, your best bet is ONE MJ600 or MJ400 modded with the smaller Dumas 3002 propeller.

[twon8]

<a href=showthread.php?s=&postid=8602690#post8602690 target=_blank>Originally posted</a> by maxvan1
Wow... I was thinking of putting two of those in a 29G. Maybe not?

yeah, two in a 29 would be near 250x turnover, a bit much even for rich

now if you are going all acros, maybe put them on alternate cycle on a wavemaker or that chanel timer people use for a wavemaker.

[slug]

I threw one of these together, an mj900 newer version, and not sure if it's right. This thing tries to spin backwards about every couple minutes and chatters away for a couple seconds before spinning the right way. I thought it would only try to spin the wrong way sometimes at start up?

[twon8]

if it doesn't have enough power to spin the prop it can lag and then spin backward. try the impellor in a 1200 and it should work.

[slug]

Ok, using an octura 1435, thought that one was a good match for a mj900?

[twon8]

if built correctly the 900 can spin a 1435, but if things are a bit off balance or maybe the prop is too far forward it may have trouble. a pic would help see any problems

[ThaNgBOm321]

the 900 can spin a 1435 prop. i have 2 900 running with 1435 props no problem.
just out of curiosity, how quiet are you guy's moded maxies?? mine is bearly humming.

[RichConley]

<a href=showthread.php?s=&postid=8603309#post8603309 target=_blank>Originally posted</a> by twon8
yeah, two in a 29 would be near 250x turnover, a bit much even for rich

now if you are going all acros, maybe put them on alternate cycle on a wavemaker or that chanel timer people use for a wavemaker.

With 2 3004s in a 29, you wont be able to keep the water in the tank.


I almost can't with 2 of them in my 58.

[jvschlegel]

Just finished up with my mod. I used the dumas 3002 prop and purchased 6 of them. I have a 120 gallon tank and think I need the 3004 prop. Anybody in the Bel Air, MD area have a spare 3004 they would like to trade for a 3002 prop?

I do have to say, I am very impressed with the water flow this thing kicks off. Now I am looking at the 3 blade racing boat props. With my boat, I am able to turn a larger diameter 4/5 blade with less pitch to get me my bottom end and still keep my top end. This will allow the smaller MJ's to perform like the MJ1200 and 900 without the concern of not being able to spin it.

Just a thought for those MJ tuners out there.

[jvschlegel]

I would also like to point out I have now done this mod to every type of powerhead I have laying in my house. Shifting through my box of fish junk, I found 2 powerheads and have successfully performed this mod. Both work the same as the maxi jet in performance. It took a bit of designing, but worked out great. I can send pics if someone can host and post them.

Jon

[TXKev]

I just put my MJMod maxi in the tank Wednesday and it keeps trying to reverse itself when it is going. It seems like every 5 minutes it reverses. The sound from it hitting the stopper every few minutes is driving me nuts. Is this normal? How can I get it to stop?

Thanks,
Kevin

[TXKev]

<a href=showthread.php?s=&postid=8618360#post8618360 target=_blank>Originally posted</a> by TXKev
I just put my MJMod maxi in the tank Wednesday and it keeps trying to reverse itself when it is going. It seems like every 5 minutes it reverses. The sound from it hitting the stopper every few minutes is driving me nuts. Is this normal? How can I get it to stop?

Thanks,
Kevin

I think I figured it out. I forgot to use the thrust washer. After I put that on, it seems to be running fine.

Thanks,
Kevin

[Bill Z]

I'm trying to mod an 802
all it wants to do is go back and forth. even out of the water it wont spin just vibrate back and forth.
any ideas.

[dhnguyen]

Pics will help

[Malifluous]

Ive had 2 mods in my tank on a wave timer for about 3 months. I just recently added some fish. Im worried that my mandarin will get chopped to bits. I have a shroud but the area around the center brace could definitely allow a fish acces to the prop.
Has anyone chopped up their fish wih the Mj mod?

[dhnguyen]

Nope. No fish was harmed in the making of this...... Yadda yadda yadda... :lol:

Anyways... I have a mandarin that once got sucked and stuck into a POS Powersweep. Ever since the MJ mod (2+ years running) he has not had another incident. As with any propeller pump on timer though (even the Tunze), I could see a fish possibly get hurt by swimming into the shroud when the pump is off and is caught inside when it turns back on.

[Malifluous]

Yes thats my primary worry, that the fish will swim in there when it is off. I could put a guard on it but then there goes my flow.

[dhnguyen]

Hey has anyone seen this?

http://www.hydor.it/inglese/koralia.htm

Looks like finally other manufacturers are getting their heads out of their A**** and start producing propeller pumps. Hopefully this will help lower the ridiculous prices of the Tunze.

[ostrow]

I haven't been impressed with some hydor products in the past. At IMAC a couple years ago I won an auto feeder. It was a piece of junk, never worked at all. Very cheap construction.

Another company one could use those adjectives for is supposed to have some mammoth 30K GPH coming out soon... Polario by Rio/Tamm.

[dhnguyen]

Maybe so but as more vendors jump on the propeller pump market, this can only be a good thing for us consumers. More competition means lower prices :D --- The whole reason I did my MJ mods to begin with.

And although I will agree with you that Hydor products by and large do look rather cheaply built, I am much less inclined to trust anything coming from Taam from experience. Still... The more the merrier IMO.

[Bill Z]

<a href=showthread.php?s=&postid=8643364#post8643364 target=_blank>Originally posted</a> by Bill Z
I'm trying to mod an 802
all it wants to do is go back and forth. even out of the water it wont spin just vibrate back and forth.
any ideas.

I give up. maybe my pump is too old.
if it wont spin out of the water it never will in the water.

[dhnguyen]

what size prop did you use? Maybe use a smaller one?

[rsxs1212]

<a href=showthread.php?s=&postid=8615218#post8615218 target=_blank>Originally posted</a> by RichConley
With 2 3004s in a 29, you wont be able to keep the water in the tank.


I almost can't with 2 of them in my 58.
rich are you barebottom?? haha if you can barely keep water in the tank i cant imagine that your sand stays in one spot

[hahnmeister]

<a href=showthread.php?s=&postid=8646691#post8646691 target=_blank>Originally posted</a> by rsxs1212
rich are you barebottom??

Boy, thats kind of a weird question to ask about someone here...

[Snarkys]

<a href=showthread.php?s=&postid=8644932#post8644932 target=_blank>Originally posted</a> by dhnguyen
Hey has anyone seen this?

http://www.hydor.it/inglese/koralia.htm

Looks like finally other manufacturers are getting their heads out of their A**** and start producing propeller pumps. Hopefully this will help lower the ridiculous prices of the Tunze.

I had heard about this . too bad it doesn't state flow rates or prices .

[dhnguyen]

<a href=showthread.php?s=&postid=8647441#post8647441 target=_blank>Originally posted</a> by Snarkys
I had heard about this . too bad it doesn't state flow rates or prices .

Actually...


http://www.tropicalfishoutlet.com/DryGoodSpecies.asp?DryGoodSubCategoryID=544&DryGoodCategory=Pumps

If these numbers are accurate, the prices listed are definitely attractive. Only caveat is even with the largest model, the flow is at best compared to a low/medium flow MJ mod. Now if they start producing higher flow models :D


D.

[rsxs1212]

<a href=showthread.php?s=&postid=8647414#post8647414 target=_blank>Originally posted</a> by hahnmeister
Boy, thats kind of a weird question to ask about someone here...

yes, but then again it has to go with flow and people are asking if two of such would be to much and so on.. i have one high flow in my 75 and my sand gets blown around quiet a bit, with all the pumps hes got in his 58 i was just curious what he did.. maybe i shouldve sent him a pm but i dont think it was that far out of line

[Snarkys]

<a href=showthread.php?s=&postid=8647696#post8647696 target=_blank>Originally posted</a> by dhnguyen
Actually...


http://www.tropicalfishoutlet.com/DryGoodSpecies.asp?DryGoodSubCategoryID=544&DryGoodCategory=Pumps

If these numbers are accurate, the prices listed are definitely attractive. Only caveat is even with the largest model, the flow is at best compared to a low/medium flow MJ mod. Now if they start producing higher flow models :D


D.

man that's fantastic

[dhnguyen]

<a href=showthread.php?s=&postid=8648038#post8648038 target=_blank>Originally posted</a> by rsxs1212
yes, but then again it has to go with flow and people are asking if two of such would be to much and so on.. i have one high flow in my 75 and my sand gets blown around quiet a bit, with all the pumps hes got in his 58 i was just curious what he did.. maybe i shouldve sent him a pm but i dont think it was that far out of line


I think Hahn meant that as a joke of sorts...

"Are you barebottom?" :)

-EDIT I should have used a wink with that :lol:

"Are you barebottom?" ;) :lol:

[RichConley]

<a href=showthread.php?s=&postid=8645054#post8645054 target=_blank>Originally posted</a> by ostrow
I haven't been impressed with some hydor products in the past. At IMAC a couple years ago I won an auto feeder. It was a piece of junk, never worked at all. Very cheap construction.

Another company one could use those adjectives for is supposed to have some mammoth 30K GPH coming out soon... Polario by Rio/Tamm.

Just to be fair, I dont think I've ever seen an autofeeder that didnt feel like it was a piece of junk.

[RichConley]

<a href=showthread.php?s=&postid=8646691#post8646691 target=_blank>Originally posted</a> by rsxs1212
rich are you barebottom?? haha if you can barely keep water in the tank i cant imagine that your sand stays in one spot

No, I'm currently wearing Khakis. I'm flattered you'd ask though.


I'm running about a 3" sand bed. I'm currently just running two of the new maximods. One running a Dumas 3004, one with an octura 1435. One of the Dumas started rattling, and I started sanding down the prop, and then realized it was actually the OTHER one rattling...and had already pretty much ruined that dumas prop...doh.

I'm down to about 35-40lbs of rock in my 58, so I dont need the flow I had when I had about 100+ lbs of rock. I like the open look much better, and flow is easier. Mine are on the back glass, one about 12" up, one 16" up. The one on the left back faces straight across the back of the tank, the one on the left (the higher one) faces diagonally across the corner. The tank is setup to have two triangular rock structures, with a gap in the middle. In the middle is my huge 16-18" sebae anemone.

The Tunze, and two seios have been sold. I've just been too lazy to update my sig. I honestly believe I have more/equal flow now to what I did before. The new style shrouds that Snarky has make a huge difference. (I'm running a slightly bigger return now too, mag5 as opposed to the old maxi1200)

[N-A-S-O]

Question...I was just on the mjmod site and noticed they are claiming the mod now puts out 2400gph:

The high flow kit is designed for use a Maxi jet 1200 Only and does around 2,400 GPH........is this true???

[twon8]

<a href=showthread.php?s=&postid=8649717#post8649717 target=_blank>Originally posted</a> by naso345543
Question...I was just on the mjmod site and noticed they are claiming the mod now puts out 2400gph:

The high flow kit is designed for use a Maxi jet 1200 Only and does around 2,400 GPH........is this true???

it is a very conservative estimate imo. I believe it is at least 1000 gph more than that, and likely closer to 5000 gph than 2400.

[RichConley]

I dont know about 5K, but it was significantly more than my 1800gph Tunze 6060. I'd guess around 3k, maybe 3.5K

[twon8]

my guess if i have to give a number is 4000 gph

[Snarkys]

some club members and i tested a bunch of pumps a month ago including the DIY modded MJ , was kinda fun . here is how you do it and the results we came up with .

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=966414

[Snarkys]

<a href=showthread.php?s=&postid=8559792#post8559792 target=_blank>Originally posted</a> by dhnguyen
Ok I just got my JBJ pumps this morning. First impression is that they are just like the MJs in shapes and design albeit cheaper.

The smallest model SP1300 (240gph @ 18w) is a bit smaller than the MJ. The next size model SP1800 (290gph @ 25w) is a bit larger then the MJ by about 1/2 inch. The largest model SP2500 (530gph @ 32w) is larger still (about twice the size of the MJ).

Somethings that I do like right off.

1. They have somewhat a fixed shaft (although it is removable) just like the AquaClear pumps so this would make modding them very easy and cut down alot of noise problem. There appears to be a thrust washer installed in there as well.

2. They seem to run much quieter than MJs stock.



Now the bad things and not neccessarily "bad" per se.

1. The diameters of the impeller/mganet port on the various models are all different sizes. They are also not the same size as what we have been using for the MJs so it may take a bit of work to find the right sized pipe to fit these.

2. No way to remove the impeller head other than to cut it off or break the tube and do the tube in magnet build. Not neccessarily a "bad" thing it just mean a bit more work.

3. The shaft sizes appear to be varied in the various models as well.

I'll have more time look into these later this weekend.



ever get one working ? kinda hard to attach the shaft to it. we didn't give it a lot of thought and time though. we decided to break off the top and then drill a 3/16 hole down the center of the plastic inside. glued a 50mm octura to the end and put it in the sink. think pushed a ridiculous amount of water . someday we will have to build a shroud for it .

[dhnguyen]

Snarkys ---

No I really haven't the time lately to do any tinkering with these at all.

From a cursory look at them, it looks like the really only easy way to attach the prop and shaft is to break the top off like you stated. I've been using the smallest model SP1300 for water changes and other things and I can tell you I'm quite impressed with the pump for the size and price :)

[RichConley]

<a href=showthread.php?s=&postid=8650742#post8650742 target=_blank>Originally posted</a> by Snarkys
some club members and i tested a bunch of pumps a month ago including the DIY modded MJ , was kinda fun . here is how you do it and the results we came up with .

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=966414

Snarkys, considering ALL of your tests were lower than manufacturer specs, I'd guess your ratings on the Maxis are low too. I dont know if its back pressure as the bag fills, or just measurement error, but if you correct to the SEIO doing 1500, and the Tunze doing 2250, you're somewhere in the range of 3000gph I'd guess, and Spazz's test is most likely up above 4000gph.


It really wouldnt surprise me...the prop on my 6060 was smaller than an octura 1435, so it doesnt surprise me that the Dumas absolutely destroys it.

[Malifluous]

<a href=showthread.php?s=&postid=8648994#post8648994 target=_blank>Originally posted</a> by Snarkys
man that's fantastic


I dont see any prices listed on the website

[dhnguyen]

They're not there anymore. Apparently they took them off but the prices were very attractive with the largest model being around $40 or so.


D.

[dhnguyen]

here's another link http://www.fishkeepers.net/ageofaquariums/gc/getDetail.php?ID=342488

[Snarkys]

funny

[quangtam7]

They won't be here until mid January, 1200 gph pump is 72 euros in Europe HERE (http://www.aquariumcoralreef.com/catalogo.asp?scat=22&cat=244), that is around US $95, don't expect to be less here.

[Snarkys]

<a href=showthread.php?s=&postid=8652216#post8652216 target=_blank>Originally posted</a> by quangtam7
They won't be here until mid January, 1200 gph pump is 72 euros in Europe HERE (http://www.aquariumcoralreef.com/catalogo.asp?scat=22&cat=244), that is around US $95, don't expect to be less here.

too bad but you might be right.

http://www.ondablushop.it//catalog/product_info.php/products_id/748?osCsid=be3fcbcad6443a59f963a43c26c4efb0

http://www.aquariumconcept.it/product_info.php?cPath=65&products_id=1590


http://www.acquarioshop.it/product_info.php?products_id=245&osCsid=d570ffb8d4c0916fbd8024cb9301cbd5

might just have to try and order one from the link D gave us .

http://www.fishkeepers.net/ageofaquariums/gc/getDetail.php?ID=342488

or just call them 843-556-3474

[quangtam7]

Right now available only in Italy.

[dhnguyen]

<a href=showthread.php?s=&postid=8650780#post8650780 target=_blank>Originally posted</a> by Snarkys
ever get one working ? kinda hard to attach the shaft to it. we didn't give it a lot of thought and time though. we decided to break off the top and then drill a 3/16 hole down the center of the plastic inside. glued a 50mm octura to the end and put it in the sink. think pushed a ridiculous amount of water . someday we will have to build a shroud for it .


Hey Snarkys. I played around a bit with the SP1800 and so far this thing is pretty good. It's a little stronger than a MJ1200 I think and could spin the Octura 1435 and 2035 just fine with some to spare. I tried the Dumas 3004 also and this thing moved some serious water. It also feels a bit quieter than the Maxijet as well. Only problem is like the AquaClear pumps, you have to help it out a little otherwise it likes to spin in reverse.


D.

[Malifluous]

I hate to judge on looks alone. But I will anyway...... The hydor pumps look as if they are a toy. They dont look durable. Nevertheless, I look fwd to them being available.

[HBtank]

How reliable are the MJ mods on a wavemaker?

[rjrobert]

Need some Help Here,
I got 4 MJ High Flow Mods for my 1200's.

I'm not having luck. Maybe someone can help me - I looked through the thread to see if I could find an answer but nothing yet.

Here we go :)
1. The directions on MJMODS seem to be wrong. Specifically when they say to cut the rigid airline tubing so 3.25" sticks out of the magnet. If you do that then the stabilizer rod doesn't fit.
So I cut the tubing doen to a little below the end of the rod so that it would have room to put the cap back on.
2. Once I got the Mod completed I was very excited and went to try it out in the sink. Much to my dismay it wouldn't seem to push any water. It did hower love pulling the water. Please note - I didn't put the stoper in yet. So I know that 50% of the time it will start in reverse. Even when It didn't start it reverse it would just kind of thrash until it entered reverse.

Anyone have any ideas what could be going on?

The magnet/prop assebly does spin really well on the rod and the propeller appears to be on the right way (Flat side facing away from the mj)

HELP !!! I really want this to work. I did buy a Tunze Stream 6100 in addition to this project but without the Modified MJ's I'll probably have to buy 1-2 more. (Which I can't afford)

Thanks in advance!!!

Bob

[dhnguyen]

As always, if you include some pics of how you modded yours, we can help you much easier. Kinda hard to know what possible problems could be.


D.

[Malifluous]

I think this info maybe buried thru out this thread . I have an aquaclear mod that behaves very differently than the other mods i done and i just wanted to share. . The conical flow that is created is so wide on this one that it is not even a cone ... It shoots water out 360 degrees around the mod regardless of the direction it spins. So i have it hangin on the back of the tank with the shrouding pointing towards the sand bottom. But no sand every moves cos the water flows out the shroud of the mod. I also have the prop on backwards. The prop is only about 5/8" from the aquaclear, very close. So the water i believe is getting pushed against the aquaclear- body and then bounces out . I think this is better (well atleast for my tank) than the conical flow.
All the other mjmods i have done will pump water in a conical flow. The shroud is basically wide open. I have a nitro prop on it, I think it was a nitro, the blades have a heavy pitch. This type of mod would be ideal if one could hang it pointing down in the center or an aquarium.
I have mine in a 30 gallon tank and it shoots water to each 4 corners of the tank.

[Malifluous]

http://img.photobucket.com/albums/v241/prettypond/mod004.jpg?t=1165061699

[Snarkys]

<a href=showthread.php?s=&postid=8662574#post8662574 target=_blank>Originally posted</a> by rjrobert
1. The directions on MJMODS seem to be wrong. Specifically when they say to cut the rigid airline tubing so 3.25" sticks out of the magnet.

1) i think you misunderstood the directions . the whole thing is that length . this is the pic that is under the instructions.

http://www.mjmods.com/images/newblackkits/impeller-lenth.gif

2) in theory it should go each way 50% of the time . in reality most people need the stopper.

[rjrobert]

Your right, I missread the picture. My Bad. That's what happens when you do it at 2am. I'm going to lower the stopper a bit since I don't think it was hitting it. I'll post if that doesn't work. tks!

[HBtank]

<a href=showthread.php?s=&postid=8662525#post8662525 target=_blank>Originally posted</a> by HBtank
How reliable are the MJ mods on a wavemaker?

Anyone?

[twon8]

<a href=showthread.php?s=&postid=8663897#post8663897 target=_blank>Originally posted</a> by HBtank
Anyone?

it depends on which prop you use and how well you build it, plus how often it gets cycled on/off. the octuras should last a good while, they are a bit harder plastic than the dumas, so they shouldn't wear as quickly.

[Herpervet]

I bought the mod kit from maxijetmods.com. I built two of them using the method above. i.e. taking the impeller assembly apart and using the carbon fiber rod.

My question is this: The kit comes with a tiny washer but the instructions don't mention how it is used.

Anyone care to explain?

[HBtank]

<a href=showthread.php?s=&postid=8664283#post8664283 target=_blank>Originally posted</a> by twon8
it depends on which prop you use and how well you build it, plus how often it gets cycled on/off. the octuras should last a good while, they are a bit harder plastic than the dumas, so they shouldn't wear as quickly.

What would be your maximum acceptable time for switching them on/off, I was planning on the octuras and I am confident in my DIY ability.

Thanks for your help.

[dhnguyen]

<a href=showthread.php?s=&postid=8664645#post8664645 target=_blank>Originally posted</a> by Herpervet
I bought the mod kit from maxijetmods.com. I built two of them using the method above. i.e. taking the impeller assembly apart and using the carbon fiber rod.

My question is this: The kit comes with a tiny washer but the instructions don't mention how it is used.

Anyone care to explain?

the washer go through the stainless steel or carbon fiber shaft and sits on the bottom as a buffer between the red/back end cap and the impeller magnet. This helps to cut down on friction.


D.

[Herpervet]

I assume the acrylic "T" shaped plate is used for some sort of mounting option and the thin part slides into the grooves of the maxijet.

But what is it supposed to accomplish? I can't figure it out. I guess my diy IQ is about 90.:o

[dhnguyen]

It's a vortex shield I think.

[rjrobert]

Got the problems fixed - Amazing what happens when you follow the directions.

Only thing I would like to figure out is how to quiet the turbulance at the top of the water. The T Shield helped the Vortex and I can always lower the pump to reduce the water turbulance.

[BigSkyBart]

<a href=showthread.php?s=&postid=8665361#post8665361 target=_blank>Originally posted</a> by rjrobert
Got the problems fixed - Amazing what happens when you follow the directions.


MAN LAW: When all else fails, remove instructions from trash & read them ;)

I get a big chuckle from those commercials, and I'm pretty good at ignoring directions :D

[gary faulkner]

HBtank

I have two 1200s with the 1435 props on my 120.

I never shut them off.

For random flow, I have four other non moded maxijets on the Red sea wave maker.

The two mods are at each end of the tank and the non moded ones are mounted on the back.

This works very well for me .

HTH

[PrivateJoker64]

If anyone has any leftover centering caps for the 1 1/2" sch. 80, pm me please. I need a couple.TIA

[clnreef]

<a href=showthread.php?s=&postid=8613323#post8613323 target=_blank>Originally posted</a> by slug
I threw one of these together, an mj900 newer version, and not sure if it's right. This thing tries to spin backwards about every couple minutes and chatters away for a couple seconds before spinning the right way. I thought it would only try to spin the wrong way sometimes at start up?
you know I'm having the same problem. but only mine is on a mj1200. the thing is, I think that it may be because I have mine glued to the bigger mag float, maybe the magnetic field might be switching the prop assembly. I haven't figured out my problem yet.......

[JMBoehling]

Here's a video of my Maxi-Mod usind a Octura 1435 prop, 1/2" Nylon Screw and nut, 1 1/2 Schedule 40 Plug Spigot, 1 1/2" Test Cap. I used a 1/2 Nylon Washer as the thrust washer.. This is on a Maxi 1200 and the alternating current on my timer is awesome, and the spread is amazing, plus it is cheap and easy to make.

Jim's Mod (http://s71.photobucket.com/albums/i122/JMBoehling/?action=view&current=PC010021.flv)

I am making another one this Monday, and with cut the PVC Plug in Half and make is more stream lined and sexy :)

Later,

Jim

[Malifluous]

Nice tank Jim, Are you the guy with corals stuck to the walls with magnets? How did u do that? I have the same mod pointing down. The flows are great. I like the shroud you did that focuses all the flow away from the wall.

[JMBoehling]

<a href=showthread.php?s=&postid=8670937#post8670937 target=_blank>Originally posted</a> by Malifluous
Nice tank Jim, Are you the guy with corals stuck to the walls with magnets? How did u do that? I have the same mod pointing down. The flows are great. I like the shroud you did that focuses all the flow away from the wall.

I am attaching them with Frag-Mags by Aqua-mags.com.

Thanks! I'll post a pictorial of the construction of my "Better Jim's Mod" someitime Monday :)

Later,

Jim

[Malifluous]

Nice, I bought the 3 pak. Thanks for the info

[Malifluous]

Nice, I bought the 3 pak. Thanks for the info

[JMBoehling]

Here is a link to my step by step pictorial of my Maxi Mod version.. It is NOT small fish friendly :)

Jim's Maxi Mod Thread (http://archive.reefcentral.com/forums/showthread.php?s=&threadid=986159)

Works great on a wavemaker and moves a ton of water...

Enjoy!

Jim

[BCool]

I've done this mod on some maxi jet 900's and now I have an aqua clear 802 that I'd like to do the mod on, does anyone have suggestions on how to accomplish this? Housings, props, ect.

[hahnmeister]

The mod on the impeller is pretty self explanitory... sinply use rigid tube, pop off the impeller, etc. But some have complained about the AC802 not being able to handle larger props... that it causes the pump to 'stutter' and never start. Well... this is partly true from the standpoint that that is what it looks like is happening. As it turns out, the pump has such a large torquey magnet that it spins too quick at startup for those who are simply using the grip of the airline tubing to hold the prop/shaft to the magnet. Because the prop shaft is hollow (no continuous shaft like with a MJ), you can hold the propeller on the ridgid airline tubing by driving a 1/4" piece of that Stainless Steel rod right through the shaft... like so...
http://i90.photobucket.com/albums/k278/wetworx101/prop.jpg
now, you cant go driving something through the magnet attachment area, but you can make it extra-long and with a 'notch' to meet up with the notch on the impeller.

Now the prop will not 'stutter' at startup, but flow like a champ. Oh, and unlike most props that are left hand rotation, you want to pick a right handed prop if you can, these pumps tend to work better that way.

As for the shroud... A regular 2"-1.5" PVC reducer can be carved up to slip right on and lock in place on the 802 like a tunze shroud.

[ctreefer]

I don't see any kits available at mjmods for a 600. Are there any available? If not, what do I need for that mod? I'm hoping to run out to our local hobby store today and see what they have in parts.

thanks

[Herpervet]

Regarding noise: My mod's run great. Very low noise but every 5 to 15 minutes something happens and the pump reverses and hits the stopper.

This makes a lot of noise for a few seconds as it rattles against the stopper.

Is this standard or am I getting an unusual amount of electrical surge/interruption?

[impur]

I had the same thing happen. I redid how the shroud mounts to the MJ, using testcaps. The problem went away.

[Herpervet]

impur,

Can you explain? I used the high flow mj mod kit.

[BCool]

hahnmeister,

what size props are you using? And I don't see the benefit of what you are doing by putting steel rod throught the propeller and shaft.

[gary faulkner]

Herpervet
Most of the time that happens, is when the prop is too close to the end of the shroud.

Shorten the tube a little so that the prop is a little closer to the pump.

HTH

[JPA]

I have the same issue as Herpervet. My prop is aligned with the slot farthest from the pump and I still have the issue of it reversing and hitting the stop every 20 minutes or so. Any ideas?

Thanks,
Joe

[Herpervet]

Ignorance is bliss. I misunderstood Gary but came out great anyway.

I thought for some reason he meant to make sure the prop was further forward rather toward the end of the shroud. NO PROBLEM I SAY!

I had a couple of the carbon fiber washers left over from previous projects and I added two of them between the magnet and the bottom rubber/red plastic cap. This put the prop further forward and fixed the issue. It hasn't rattled once in 24 hours.

So in my case the carbon fiber shaft was simply too short and there was too much play.... OR......it wasn't hitting the stopper square.

This kinda reminds me of the Seinfeld episode where George figures out that he will score with the ladies as long as he does the exact opposite of what his gut instincts tell him. :lol:

Thanks Gary! (just funnin' with ya')

If I didn't have any of those little washers then I would simply move the stopper slightly in either direction and see what happens.

You will end up with extra holes but thats no big deal. Just don't glue them in until your sure of the placement.

[got2lb]

So I see that there are some others experiencing the same problems I am.

I built the med. flow kit this weekend on a 900 maxi jet. It didn't want to start at first but then it did and was working fine for about 24hrs. When i got home from work today all of a sudden it started making this terrible chattering sound and then it stopped. Now that's about all it will do is make this chattering sound and eventually stop. It did start once and ran for about 3 seconds then started chattering again and stopped.

It's the new style shroud and I used the carbon fiber rods. I loved it when it was working that thing moved tons of water!

[twon8]

what propellor did you use?

you might have it too far forward on the shaft, or not balanced.

[Malifluous]

Why wont my Aquaclear mod work? It will spin some times but for the most part just vibrates. Sometimes it will spinn and switch diretions repeatedly. Ive done 3 other mods that work great but this one is a no go. I am using the big dumad prop. Maybe the prop is to big for the aquaclear 70? Is the rod to o long ? Perhaps making the distance between prop and pumpwould helkp. Any sugesstions please

http://img.photobucket.com/albums/v241/prettypond/IMG_0063.jpg?t=1165924794

http://img.photobucket.com/albums/v241/prettypond/IMG_0064.jpg

[Bill Z]

<a href=showthread.php?s=&postid=8732808#post8732808 target=_blank>Originally posted</a> by Malifluous
Why wont my Aquaclear mod work?

I tryed moding two of old 802's. had the same problem. never did get it to work.

I think some motors are wound in a way thet makes this mod not work. I think the same goes for the maxi's. not everyone is luck enough to have the mod work. just my $.02

[dhnguyen]

You need a right handed propeller to get it to work on an AC 70 (AC 802) pump. These pumps have a tendency to spin in one direction only and it just happen to be the reverse of what we want. Propellers come in left and right handed rotation and unless specifically stated, they are typically left handed.


D.

[dhnguyen]

You guys doing this on an AquaClear might want to jump on this thread

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=983757

[hahnmeister]

<a href=showthread.php?s=&postid=8681521#post8681521 target=_blank>Originally posted</a> by hahnmeister
The mod on the impeller is pretty self explanitory... sinply use rigid tube, pop off the impeller, etc. But some have complained about the AC802 not being able to handle larger props... that it causes the pump to 'stutter' and never start. Well... this is partly true from the standpoint that that is what it looks like is happening. As it turns out, the pump has such a large torquey magnet that it spins too quick at startup for those who are simply using the grip of the airline tubing to hold the prop/shaft to the magnet. Because the prop shaft is hollow (no continuous shaft like with a MJ), you can hold the propeller on the ridgid airline tubing by driving a 1/4" piece of that Stainless Steel rod right through the shaft... like so...
http://i90.photobucket.com/albums/k278/wetworx101/prop.jpg
now, you cant go driving something through the magnet attachment area, but you can make it extra-long and with a 'notch' to meet up with the notch on the impeller.

Now the prop will not 'stutter' at startup, but flow like a champ. Oh, and unlike most props that are left hand rotation, you want to pick a right handed prop if you can, these pumps tend to work better that way.

As for the shroud... A regular 2"-1.5" PVC reducer can be carved up to slip right on and lock in place on the 802 like a tunze shroud.

Vibration and sputtering is usually because the shaft/prop is slipping on the magnet. These magnets have alot of torque... enough to almost spin while leaving the prop in place. Usually, when they start to slip though, its enough to make the motor reverse as it gets close to the next pole, because its running slower than it should... so it sputters. You have to make sure that the shaft, airline, and prop are securely fastened to the magnet, and having a RH prop is a big bonus as well.

[shawk]

is there any updates on the jbj powerhead mod?

[dhnguyen]

Yes I have modded the JBJ SP1800 with a Dumas 3004 and it rocks. The pump is quieter than the MJ1200 or so it seems and is very powerful.

Flow wise they are about the same.

Sorry no pics right now as I am in the midst of trying to move to a new house (AGAIN!)

[Snarkys]

we broke the magnet apart on the big one to see what is inside so i will have to get around to ordering another .


The big ones magnet is huge . I'm sure it would run a really large prop. I am not sure a stopper bar will work with it because of the momentum of the large magnet . maybe with plastic but not with the carbon fiber tube. we we tried the carbon fiber tube with the eheim and the tube would explode when it hit the stopper.

[dhnguyen]

<a href=showthread.php?s=&postid=8735677#post8735677 target=_blank>Originally posted</a> by Snarkys
we broke the magnet apart on the big one to see what is inside so i will have to get around to ordering another .


The big ones magnet is huge . I'm sure it would run a really large prop. I am not sure a stopper bar will work with it because of the momentum of the large magnet . maybe with plastic but not with the carbon fiber tube. we we tried the carbon fiber tube with the eheim and the tube would explode when it hit the stopper.


I haven't messed about with the larger SP2300 pump yet. Mostly I'm afraid what it would do to my puny 55g if I tested it in there :lol:

I did put a stopper into the SP1800 mod and it worked like a charm. For the SP2300 you would need a pretty hefty propeller powerful enough to be able to pull the magnet out in order for said stopper to work properly.


D.

[got2lb]

Originally posted</a> by twon8
what propellor did you use?

you might have it too far forward on the shaft, or not balanced.

Not really sure which prop I used. I ordered the medium flow kit from mjmods.com

This one:

http://www.mjmods.com/index.php?main_page=product_info&cPath=1&products_id=1

According to the website it's the Octura 1435 prop.

I have the prop clear at the very end of the shaft. Isn't it supposed to be? How do I know if it's perfectly balanced? It spins real good on the shaft.

[got2lb]

Here's some pics of mine, not sure if that will help or not.

The whole mod:

http://i5.photobucket.com/albums/y195/got2lb/DSCF1436.jpg

Propellor assembly with shaft in (I also have the carbon fiber shaft, cut to same length) :

http://i5.photobucket.com/albums/y195/got2lb/DSCF1439.jpg

Propellor assembly without shaft:

http://i5.photobucket.com/albums/y195/got2lb/DSCF1441.jpg

[Snarkys]

useing the thrust washer ?

might want to check out the threads on the top of this forum
http://reefcentral.com/forums/forumdisplay.php?s=&forumid=445

[got2lb]

Yeah, I had it on there. Then I took it off to see if it made a difference and it didn't.

[got2lb]

Okay I read through your threads and about the only I haven't done is try to shave down the prop. Should I try this and see if it helps?

[JMBoehling]

Here is a pretty simple mod using a 1 1/2" PVC Cap, couple nylon screws and a Dumas 3004 prop. I imagine you can get creative with the shroud using your Rotozip, dremel or router.. I leave mine open because I have only large fish and SPS, and no clean up crew :)

Jims Mod using Dumas 3004 Prop (http://s71.photobucket.com/albums/i122/JMBoehling/?action=view&current=PC120038.flv)

[Snarkys]

neet : )

can you tell me the name of the coral mags , i was trying to tell someone about them yesterday but i forgot the name .

[JMBoehling]

<a href=showthread.php?s=&postid=8750620#post8750620 target=_blank>Originally posted</a> by Snarkys
neet : )

can you tell me the name of the coral mags , i was trying to tell someone about them yesterday but i forgot the name .

They are called Frag-mags. Here is a link

Magnetic Frag Plugs (http://www.aqua-mags.com)

Later,

Jim

[JOSEPHLB]

I have two MJ 900's on the way for my 65g (36x18x24).

The only hand tools I have are a Dremel. Would it be best just to order a couple of the MJMod kits? Or do it myself?

[gary faulkner]

Get the med. flows from MJMODS.COM

[Hopeful Reefer]

Ok...I have a couple of Seio's...I have asked around to see if they can be modded similar to the MJs...I have been told to look about "80 pages back" in this thread...well, I've looked through the whole thing from front to back and didn't see it...can someone point me to the right place to see the mod for the Seio's please...

[truth954]

I recieved my mjmod kits (2)high flow 1200 kits and the 900 med flow kit. I installed the 900 first and worked perfect around 11:00 with lots of flow until about 3:00 AM with the noise of the motor turning backwards and the prop hitting the acrilic stopper. did some checking out in the good ole sink and noticed that when the pump is out of water is spins in the correct direction and as I slowly imerge it in water, stills spins in the correct direction until it is just above the shroud then it either wants to rotate backwards or just jitters back and forth. Any suggestions would be appreciated

Thanks

[truth954]

I recieved my mjmod kits (2)high flow 1200 kits and the 900 med flow kit. I installed the 900 first and worked perfect around 11:00 with lots of flow until about 3:00 AM with the noise of the motor turning backwards and the prop hitting the acrilic stopper. did some checking out in the good ole sink and noticed that when the pump is out of water is spins in the correct direction and as I slowly imerge it in water, stills spins in the correct direction until it is just above the shroud then it either wants to rotate backwards or just jitters back and forth. Any suggestions would be appreciated

Thanks

[truth954]

I recieved my mjmod kits (2)high flow 1200 kits and the 900 med flow kit. I installed the 900 first and worked perfect around 11:00 with lots of flow until about 3:00 AM with the noise of the motor turning backwards and the prop hitting the acrilic stopper. did some checking out in the good ole sink and noticed that when the pump is out of water is spins in the correct direction and as I slowly imerge it in water, stills spins in the correct direction until it is just above the shroud then it either wants to rotate backwards or just jitters back and forth. Any suggestions would be appreciated

Thanks

[truth954]

ps, im using the CF rod. HTH with any suggestions

[coreno16]

I've done the mod with the 900 3 times now and i get the same problem everytime. It runs fine for a night. Then the next day it's too much for the pump to spin and it will start to reverse every minute or so, then it begins to stay in reverse. My thoughts were too much power is drawn during the day so the pump cant produce enough torque. But I checked that theory last night and it's not correct. So i'm pretty sure once everything sort of aligns or something weird, the prop is too much for the pump to spin. I'm going to try shaving down the prop today. I'll let you know how it goes.

- Cory

[daddavis1]

For those having issues with flow restrictions. I have made this mod with 2-1.5" reducer extended with a 2" coupling and am getting very wide gentle output with 35mm props on a MJ 900. Its 2-3 times more output than the sieo superflow. I can post some pictures as soon as I get back home. The overall length of the shroud is 2.5"

[coreno16]

Shaved down the prop a bit using a dremel tool. Spin the prop then let it run on the dremel to shave it. This is similar to the belt sander method just make sure you use the largest sanding wheel you can find. Anyways, it didnt take off all to much, but the mod works flawlessly now. Best of all, it's silent.

- Cory

[JOSEPHLB]

If this was a little cheaper, this piece could be used for a couple of shrouds, correct? Its 1 1/2" x 6" long; its a strainer and it appears to be precut just the perfect way for use as a MJ shroud.


http://www.marinedepot.com/IMD/ft_screen_big.jpg

[aninjaatemyshoe]

Has anyone had a problem with the mjmod creating huge vortexes? I have mine placed about 5-6 inches from the surface and it still is ocasionally pulling down large funnels from the surface. Aside from the annoying slurping sound, does this have any adverse effect?

[Joshsmit56001]

Make a 2" by 2" piece of acrylic and put it above where it is make the vortex and it shouldn't do it anymore

[Snarkys]

<a href=showthread.php?s=&postid=8810161#post8810161 target=_blank>Originally posted</a> by coreno16
Shaved down the prop a bit using a dremel tool. Spin the prop then let it run on the dremel to shave it. This is similar to the belt sander method just make sure you use the largest sanding wheel you can find. Anyways, it didnt take off all to much, but the mod works flawlessly now. Best of all, it's silent.

- Cory

we really ride the edge of what these pumps are capable of, sometimes they just cant handle it and ya need to take just a hair off the prop : )

too bad they dont make an octura or dumas that is just hair smaller .

[kroe]

joseph: I used that for my first try at a mj mod... it works. The slots are a bit small and the clear shows algae and crud more than dark grey.

[kroe]

I like to mod 600s with 1435 props. The 600/1435 combo is really pushing it... some spin them no problem, most require a bit of trimming. I used to sand them by spinning against a piece of sandpaper, but found that cutting them down by hand evenly by eye (so not really all that even) didn't add any noise. I trim them down with scissors when I need to now - and never notice vibration or noise. I have modded at least 50 MJs like this.

[skidaddy]

i just modded two 1200's last night using
mj mods kit..i noticed a small problem though,
there is a loud vibration coming from the 1200
and i dont know what it is but inside the tank it
makes a good amount of noise..what do i do to make
it quiet like its supposed to be. i did the medium flow
kit btw. otherwise that thing really kicks water around
like an animal.


nevermind..found it in the mjmod section.

[Wheatez]

i need some recommendations on flow for my 75 gallon. I was going to get 2 mj 1200s and put the 2 high flow mods from mjmods. I also have a mag9 on my return. Will this be ok should i get the med flow mod or even mj900s? I keep a good mix of diff kind of corals. any help is appreciated..

[dhnguyen]

Hav you all seen this DC propeller pump yet? :)


http://cgi.ebay.com/RESUN-WAVE-MAKER-PUMP-WAVEMAKER-WAVER-15000-3-MODE-WAVE_W0QQitemZ150075287166QQihZ005QQcategoryZ46312QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://www.reefshops.com/html/product_235.html

http://archive.reefcentral.com/forums/showthread.php?s=&postid=8844431#post8844431

Cheaper than a Tunze Stream and can do up to 4000gph with variable controller

[mfinn]

To bad it's 220v
Is there a converter of some sort?

[dhnguyen]

I am sure they will release a 110V version sooner or later. Would be silly for them to not release this in the US where most of the reef marketshare would be.

I am also fairly certain you can get 220V converted over to 110V easily as well

http://www.voltage-converter-transformers.com/step-down-transformer.html

[Trnman32]

I just ordered a mjmod and a 1200 any ideas on how to mount the pump other than the suction cups and magnet mods they sell,pictures would be nice

[Trnman32]

I work in the heating and air business all you need is a step down transformer and a little electrical knowledge,but man that thing is huge

[dhnguyen]

<a href=showthread.php?s=&postid=8844727#post8844727 target=_blank>Originally posted</a> by Trnman32
I work in the heating and air business all you need is a step down transformer and a little electrical knowledge,but man that thing is huge


No larger than a Tunze IMO.

[Trnman32]

I just put my first moded 1200 in the water and oh my god this thing is great, current all over my 120 and quiet and cheap my sps will be happy now.

[aninjaatemyshoe]

I bought a mjmod kit from mjmods.com. Love it for the most part. The only problem I've had is that it has started to get really noisy after the first couple weeks. There seems to be periods of high and lower noise. I tried fiddling with it a bit, and put a thin piece of styrofoam between the magnet holder and acrylic, but none of that really made a difference. Has anyone else had a similar problem? Is there a way to make it less noisy?

[reefer_man_mike]

Will 2 modded mj 600's and 1 900 be good for a 72 gallon bowfront or will it be 2 much? How much flow will the 600's with nitro hammers put out? the 900 with the octura is around 1500 is it not?

[Aquatic Island]

I know this question has been asked numerous times before...

How did you guys make the front cover (the one that looks like the mercedes benz logo)?

How is the stopper made and mounted to the housing?

[rsxs1212]

what is the best stopper material?? after about 3 months of turning it on and off once a day during feeding the stopper made of the included acrylic rod has snapped off.. im not gonna wanna have to put in a new stopper every 3 months or so..

let me know

[reefer_man_mike]

please some one .... pleaseeeeeeeeee


Will 2 modded mj 600's and 1 900 be good for a 72 gallon bowfront or will it be 2 much? How much flow will the 600's with nitro hammers put out? the 900 with the octura is around 1500 is it not?

[rsxs1212]

i have one high flow mod 1200 in my 75 gallon tank and i might do a med flow mod on my other 1200.. i think youd be better off with a high and med on two 900's than two 600s and one 900 just so there isnt as many pumps.. but just my opinion...

alot of people say you cant have too much flow because it doesnt compare to the ocean.. but you have to consider what you want to keep, if your going BB.......

[reefer_man_mike]

No not BB and the only pumps i have right now are 3 600's and 1 900

[rsxs1212]

well then you probably done want to much flow or all your sand is going to be blowing around.. i have one 1200 high flow in my 75 and i can barely keep my sand still...

the 900 and 1200 high flow mods produce the same flow.. its just something to do with how powerful the 1200 is compared to 900, or what i mean is that the 900 turns at the same rate but its not as powerful

think of as a car motor.. one is 290 hp other is 367hp but they both redline at 5600rpms ( just threw some numbers out there :) ) its just the 367(mj1200) has more torque..

if i am completely wrong here please someone correct me but someone told me that or i remember reading it somewhere

[BCool]

Does anyone know the best prop for an aquaclear 802?

[hahnmeister]

Use an octura 1250R on the 802/70, and then shave just a bit off of the edge (this prop is a little too much as is, but if you give it a slight trim, its perfect). RH props work better on the ACs as well.

[BCool]

Thank you very much

[tany]

<a href=showthread.php?s=&postid=8969096#post8969096 target=_blank>Originally posted</a> by hahnmeister
Use an octura 1250R on the 802/70, and then shave just a bit off of the edge (this prop is a little too much as is, but if you give it a slight trim, its perfect). RH props work better on the ACs as well.

where can i get octura 1250R?? thanks

[hahnmeister]

funrcboats.com... special order.

[Ursus]

Can anyone direct me to details about doing this with Aquaclear powerheads?

[tany]

<a href=showthread.php?s=&postid=8972576#post8972576 target=_blank>Originally posted</a> by Ursus
Can anyone direct me to details about doing this with Aquaclear powerheads?

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=983757

[elmatth1]

has anyone tried a magnet like this to mount their MJ mods? http://www.magnet4less.com/NB065.html

I was thinking about two of these magnets with the inside one attached to an "L" bracket and thumb screw which would allow me to swivel my MJ Mod... if that makes any sense.... Something like this
http://reefcentral.com/gallery/data/500/88159MJ_Mod_Bracket.JPG

and to attach the MJ to the "L" bracket use something like this
http://reefcentral.com/gallery/data/500/88159mjupgrade.jpg

Has anyone ever done anything like this? and if so, was it successful... pros and cons of it?

[hahnmeister]

Yeah, I did some like that... I figured why not take advantage of the existing mount, right? Well, its alright, but the bracket isnt the strongest. A good accidental whack and the powerhead will pop right off... know what I mean? I would consider it pretty good though.

Another way I found that worked very well was to pop off the cover where the cord comes out... know what I mean? There is a small pocket around the shroud where the magnet goes. You can drill this with 1/4" holes and then simply run a nylon bolt or nut through the pump's main housing. This is very secure.

[ToTaLCHaoS13]

I need help! I made two mjmod's using mj900's and the low-flow kits from mjmods.com. This morning I came downstairs to the sound of one of them trying to spin backwards and slamming into the acrylic stop peg. It never was able to get itself spinning correctly so I unplugged it several times and still no luck. Left it unplugged and went to work. Then when I got home from work the other was doing the same thing! :mad2:

I'm sure it is something I have done wrong but I have no idea what. I followed the direction perfectly...everything is balanced and when it is spinning the right direction it produces a ton of flow...

Has anyone else had this problem?! :confused:

[ToTaLCHaoS13]

double post...