2x EDUCTORS & NO MORE POWERHEADS!!

[ivgonmad]

If anyone is interested I made some Eductors that give me all the flow I need in my 90g tank.

CLICK HERE FOR MORE INFO on how to create your own!

[barbra]

I actually sell metal metal eductors for industrial usage so I have been familliar with the concept for awhile. The ones I have looked at in the past would have dominated the tank in a very unattractive way. Has that changed? It is hard to tell from the in-tank pic.

[Fishboy1230]

Not at all from the video Look like the size of a soda can or less. There made from Pvc parts for about $5-7 so no metal to rust in your tank!

Video link--- http://s160.photobucket.com/albums/t...t=CIMG0702.flv

[ivgonmad]

Originally posted by Fishboy1230
Not at all from the video Look like the size of a soda can or less. There made from Pvc parts for about $5-7 so no metal to rust in your tank!

Video link--- http://s160.photobucket.com/albums/t...t=CIMG0702.flv

Yup thats right, smaller than a soda can.

[ivgonmad]

Originally posted by barbra
I actually sell metal metal eductors for industrial usage so I have been familliar with the concept for awhile. The ones I have looked at in the past would have dominated the tank in a very unattractive way. Has that changed? It is hard to tell from the in-tank pic.

why dont you take a look yourself, click on the link up top

[ivgonmad]

so, anybody try them yet?

[kookerson]

So.....do you need a super beefy pump for this to work? Ive got an Ocean Runner 3500 as my return pump (with a 3-1/2 foot head).......would it be worth doing one of these eductors as my return?

[ivgonmad]

This will with work any pump that can push water through the eductor's 7/16" hole, so yeah it should work. The less pressure the pump can handle the less efficient the eductor will be, but should still work.

Oh, and yes it would be beneficial because even if you only get a 2x increase in flow, it is still a 2x increase in flow

I would only use one eductor with the Ocean Runner 3500, if it is too much flow, try splitting it into two, but I would try with just one first.


Good Luck

[ivgonmad]

Originally posted by kookerson
So.....do you need a super beefy pump for this to work? Ive got an Ocean Runner 3500 as my return pump (with a 3-1/2 foot head).......would it be worth doing one of these eductors as my return?

For under $5, you should just try it anyways to see what kind of output you get

LMK how it goes, pretty sure you gonna like the results.

[rsteagall]

Question... is the compartment on the right for water storage to keep the level constant in the rest of the sump?

[sfsuphysics]

my ocean's motion won't allow these to work at all, once any pressure starts building up it'll have another outlet to go through, it does look nice though.

[ivgonmad]

I have tried them with an Aquaclear 901 (900gph) which used to be the 110, and have pretty good results, I'm sure you can get your OR 3500 to work on one of these since the Aquaclear is not even a pump, its a big powerhead LOL!

[ivgonmad]

My Eductors utilize more of the speed that the pump is already generating and with an outlet hole that is ~1/2" that doesn't generate a lot of Back Pressure. Other eductors sold in the aquarium industry are adaptations of industrial grade mixing eductors that usually use high pressure pumps with a low output, so they are designed with a small outlet hole to create the fast velocity jet is needed to work these eductors.

Not sure if it makes sense? LOL

In other words... These eductors don't require as much pressure to run as the ones that are being developed for the industry at the moment, the outlet from the eductor is about 1/2 in size, not a big problem for most pumps.

[ivgonmad]

Originally posted by sfsuphysics
my ocean's motion won't allow these to work at all, once any pressure starts building up it'll have another outlet to go through, it does look nice though.

Oceans Motions.... This should work as long as you have them on every outlet so that they pressure is equalized throughout the lines and the water has no easy exit.

You should get an amazing wave action if you get this on your ocean motions working with the eductors and an appropriate pump.

So, please try it with eductors on all outlets and LMK if you like the results. I am very interested in hearing what happens.

[ivgonmad]

Originally posted by ivgonmad
Oceans Motions.... This should work as long as you have them on every outlet so that they pressure is equalized throughout the lines and the water has no easy exit.

You should get an amazing wave action if you get this on your ocean motions working with the eductors and an appropriate pump.

So, please try it with eductors on all outlets and LMK if you like the results. I am very interested in hearing what happens.

Easy and cheap to make anyways

[Pbrown3701]

The reason the commercially available units use a small output is because the basis for the eductor operation is using fluid velocity to create a low pressure vacuum (which pulls more fluid). The more velocity you can create, the better the eductor will work (but you do create more pressure too).

Nice work by the way. I bought one off the shelf for almost 30 bucks. Works great, but i wasn't happy about having to pay for something that I knew could be made DIY much cheaper.

[ivgonmad]

Originally posted by rsteagall
Question... is the compartment on the right for water storage to keep the level constant in the rest of the sump?

Thats gonna be my refugium, it has a kind of durso stand pipe that will suck up some pods from the bottom of the refugium.

[ivgonmad]

Originally posted by Pbrown3701
The reason the commercially available units use a small output is because the basis for the eductor operation is using fluid velocity to create a low pressure vacuum (which pulls more fluid). The more velocity you can create, the better the eductor will work (but you do create more pressure too).

Nice work by the way. I bought one off the shelf for almost 30 bucks. Works great, but i wasn't happy about having to pay for something that I knew could be made DIY much cheaper.

yeah, thats what I was trying to say!!! Thanks for making it clear for everybody, my explanation was kinda funny LOL!!

[Pbrown3701]

Also - on your sump, I read that you plan to use the right side for a fuge. How do you plan to prevent that from syphoning once the water level reaches the bulkhead? And if you drill a hole, do you think you'll have some problems with microbubbles reaching your return section? You may be able to extend the output pipe to the other side of the baffles so you can eliminate that problem - just a thought.

[ivgonmad]

I was thinking that too

It has a hole, but what I was thinking is that I could also put a larger pipe like a 3" PVC that extend above the water level and have fuge dump in there, it will overflow the 3" PVC and dribble into the return section.

Not sure if the pods would make it through all that, or if they would get stuck in the last part where the 3/4" line from the fuge drains into the 3" PVC.

[Pbrown3701]

Well, if they don't make it through that, then they definately won't make it through the pump. In order for pods to make it to the display, you should have your fuge higher than your display so that it can dump directly without them having to go through the return pump. With that said, mine is set up the same as yours...

[Pbrown3701]

you may also consider just removing the pipes all together and just let the water dribble out of the bulkhead and run down the baffle in a sheet (probablly less microbubbles that way)

[kookerson]

Originally posted by ivgonmad
For under $5, you should just try it anyways to see what kind of output you get

LMK how it goes, pretty sure you gonna like the results.

Yeah, no kidding huh........$5 isnt going to break the bank! lol! Ill post my results as soon as I build this thing!

[FloridaFishMan]

Wow this is a pretty cool DIY project. Anyway to attach these to 3/4" locline?

[ivgonmad]

Originally posted by FloridaFishMan
Anyway to attach these to 3/4" locline?

Hmmmm... Let me get back to you on that one...