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  #976  
Old 08/06/2007, 07:02 PM
192clark 192clark is offline
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I am using the stock riser tube just because I have not got to it yet. I have bored out the 90. The riser tube mod is just for ease of adjusting for better skimmate, it really does nothing to increase amount, you just do not have to get hand wet
  #977  
Old 08/06/2007, 07:02 PM
192clark 192clark is offline
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I am using the stock riser tube just because I have not got to it yet. I have bored out the 90. The riser tube mod is just for ease of adjusting for better skimmate, it really does nothing to increase amount, you just do not have to get hand wet
  #978  
Old 08/06/2007, 08:07 PM
ThaNgBOm321 ThaNgBOm321 is offline
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i just ordered the pf4 off the bay and waiting for it to come in... i read somewhere that someone boiled there pf4 for like 10 mins on medium temp then flaten it out before attaching it to the NW... it this better then just leaving the mesh alone and fishlining it to the NW??

so far i smooth out the volute,drilled out the venturi and bored out the fittings on my RPS-3000... is this mesh the only thing left??

YzGyz
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2nd best way is to learn from ones own mistakes but the best way to learn is from others...

thx to Randy and so many other for making reefing that much easier
  #979  
Old 08/06/2007, 10:01 PM
teog teog is offline
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Ive decided to purchase a ddnw-150 for my 180g sps(the dnw200 doesnt fit ) Would I do the mesh mod on both re-circulating pumps?
  #980  
Old 08/07/2007, 12:03 AM
JCTewks JCTewks is offline
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yes
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  #981  
Old 08/07/2007, 10:11 AM
chirocato chirocato is offline
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Hey guys. I recently mesh modded my DNW-200 and drilled out the 90 degree stock venturi as much as possible without going through the side walls. Much improved but I want more. Next I want to mod the venturi with the 1/4" ID tubing (3/8 OD) as has been noted in previous posts. What's the best way to do this. Also can I drill straight through the 90 degree stock venturi without screwing it up? I'm sure these questions have likely been asked 100 times but this thread has gotten so large I can't find the answers. Thanks all.
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  #982  
Old 08/07/2007, 08:01 PM
chirocato chirocato is offline
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Well...I actually started reading from this pg backwards and found most of the info I needed. Just gonna build a new venturi. From what I read, what I was lookin to do won't work well. I just wanted to drill out the old venturi and epoxy in a larger one in its place. Thanks anyways all.

Funny thing I've learned about RC... if no one answers your posts, it's usually because the answers aren't too far away.
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  #983  
Old 08/07/2007, 11:47 PM
JCTewks JCTewks is offline
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If you look at pg 37 i think ther is a pix of mine that I drilled straight through....well, i'll just show it again. the prob with using any new plumbing is getting it to fit with the metric that is on there. Here is how I did mine...It's pulling 20SCFH on an OTP1000.
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  #984  
Old 08/08/2007, 08:01 AM
Kurt03 Kurt03 is offline
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wow 20scfh on a oct1000 Nice job!
Did you post pics of your mesh? And what mods did you do.
Is this a recirc skimmer? Must be cause the venturi is on the 90
  #985  
Old 08/08/2007, 07:48 PM
ThaNgBOm321 ThaNgBOm321 is offline
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OK... got the my mesh today, 15mins later it was modded... i pop off one row of the NW with a handle 12'' chef knife and put 3 layers of mesh on... 15lb test fishing line on her and put her back together... seems to pull decent air ( i was expecting more) but this is all visual.. no meter.... but saw a big difference in bubble size.. it's a lot smaller... and the reaction chamber is a lot more turbulent... too much i have to say... but it's not 'super skimming' yet... well see how long it takes...

YzGyz
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YzGyz = Wise Guys ohhh and cows go MOOO!!!

2nd best way is to learn from ones own mistakes but the best way to learn is from others...

thx to Randy and so many other for making reefing that much easier
  #986  
Old 08/08/2007, 10:27 PM
JCTewks JCTewks is offline
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Quote:
Originally posted by Kurt03
wow 20scfh on a oct1000 Nice job!
Did you post pics of your mesh? And what mods did you do.
Is this a recirc skimmer? Must be cause the venturi is on the 90
Look at pg 34...yes it is a recirc, on a DNW110.
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  #987  
Old 08/08/2007, 10:34 PM
JCTewks JCTewks is offline
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Well, my 2nd OTP1000 melted down today!!!

I'm not sure at all the cause of this one.

The first meltdown was my own stupid fault. This one is a mystery.

The skimmer level dropped considerably yesterday afternoon. The watts were still the same as always (36watts, factory is 37. Same PF of .59), the airflow didn't change, and the feed was still exactly the same. I couldn't figure it out, so I just assumed it was some wierd enviromental factor, like jet fuel in the air or something. Tonight, I came home to a familiar sweet smell of melting plastic...again! The pump is melting, and the water temp is at 92. Nothing dead yet, still holding out that I won't lose any life in the tank.

I'm done with Octopus pumps!!!!! I still think they are able to pull a lot of air for their price, I just need something a little more reliable.

Best of luck to all of you.
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  #988  
Old 08/08/2007, 11:33 PM
ThaNgBOm321 ThaNgBOm321 is offline
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could it be that it pulls too much air and not enough water contact to cool it down?? i mean, the water contact is in its design to cool submersible pump...

YzGyz
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YzGyz = Wise Guys ohhh and cows go MOOO!!!

2nd best way is to learn from ones own mistakes but the best way to learn is from others...

thx to Randy and so many other for making reefing that much easier
  #989  
Old 08/08/2007, 11:39 PM
JCTewks JCTewks is offline
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I guess that is a possibility...never really thought of that. That would be pretty cool if that was the case

Maybe bean will have some thoughts on if that is really a possibility.
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  #990  
Old 08/09/2007, 10:42 AM
impur impur is offline
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Dang that sucks. Time to try one of the GenX pumps or Sedras maybe?

Looks like another split coming!!
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  #991  
Old 08/09/2007, 11:19 AM
luke33 luke33 is offline
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I would scratch the genx pump idea, they are kinda garbage imo. Rust buckets that underperform.
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  #992  
Old 08/09/2007, 01:56 PM
porthios porthios is offline
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i think i'm done with the otp as well. would love to know what your thoughts are about what pump to replace it with..
  #993  
Old 08/09/2007, 02:03 PM
luke33 luke33 is offline
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Good pump's these days are tough to find. Depending on the oct model your talking about i'd think the nw200 would be the easiest to find. I don't like genx, sedra, eco, oct....the list goes on and on. I'd go with a modded quiet one 3000 or a modded sicce pump. I have a 990gph sicce suprema that is pulling over 40scfh and i'm just holding a 1/4" tube on it, no venturi yet. I'm guessing it'll do over 50-70scfh with the right venturi, i'll mess with it when i have time. But anyhow i'm guessing 40scfh is about right for that body so I bet an aquabee would work great and only pull around 20ish watts as well. The only prob with the QO and sicce's is after a power outage, they sometimes don't start.
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  #994  
Old 08/09/2007, 04:29 PM
porthios porthios is offline
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'I'd go with a modded quiet one 3000'

you seen anyone mod this successfully? i've searched for quiet one 3000 mod threads but haven't found anything..

'But anyhow i'm guessing 40scfh is about right for that body'

well, i haven't seen anything beyond 15scfh (not done trying just don't have much hope) but rich's comments suggest that he thinks 25scfh is about all the nw200's neck can handle. any reason you think otherwise?
  #995  
Old 08/09/2007, 06:15 PM
luke33 luke33 is offline
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Well i have a 17" tall skimmer that is 11" diameter for 8" and 5" at 9" diameter and then it goes to a 4" neck diameter for 4" and i have 35scfh goin through it. If your skimmer is 24" tall and the neck is how large diameter wise around 3-4" i think, with a pump that isn't to much turbulence like the QO3000(780gph water only) you should have a calm enough skimmer it could handle around 40scfh ok. There's a QO mod thread going around as well as a sicce thread in the DIY forumn.
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  #996  
Old 08/09/2007, 07:48 PM
ThaNgBOm321 ThaNgBOm321 is offline
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why not replace the 'knock off' with the real one??? a or2500 or or3500???

ohh.. just got home and checked up on the rps-3000... all i have to say is wow!!! wet skimming like mad!!!!! need to find it's sweet spot now... ohh but 1st... i have 3 layers of pf4 in the old style nw.. i left one row on and then 3 layers on top... cut it to the same size as the nw... i think i wanna cut it ( pf4) back some if it will lower my wattage... only thing is that i dont have a meter.. so anyone have a rough estimate as to have much to trim off to get lower wattege and not lose all the air???


YzGyz
__________________
YzGyz = Wise Guys ohhh and cows go MOOO!!!

2nd best way is to learn from ones own mistakes but the best way to learn is from others...

thx to Randy and so many other for making reefing that much easier
  #997  
Old 08/09/2007, 08:13 PM
luke33 luke33 is offline
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Well, the2500=125 bux compared to qo3000=40 bux and the qo input is 1" compared to teh 3/4" input for the 2500.
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  #998  
Old 08/10/2007, 01:34 AM
JCTewks JCTewks is offline
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I'm heavily leaning towards the ER sedra 3500 to replace the meltdown OTP1000. That is the pump that ER and ASM use on their skimmers that are the same size. Anyone have any good or bad to say about them?
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  #999  
Old 08/10/2007, 01:36 AM
JCTewks JCTewks is offline
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Quote:
Originally posted by ThaNgBOm321
why not replace the 'knock off' with the real one??? a or2500 or or3500???

ohh.. just got home and checked up on the rps-3000... all i have to say is wow!!! wet skimming like mad!!!!! need to find it's sweet spot now... ohh but 1st... i have 3 layers of pf4 in the old style nw.. i left one row on and then 3 layers on top... cut it to the same size as the nw... i think i wanna cut it ( pf4) back some if it will lower my wattage... only thing is that i dont have a meter.. so anyone have a rough estimate as to have much to trim off to get lower wattege and not lose all the air???


YzGyz
The OR seem to have a lot of flow for the air they put out...I'd like to upgrade to something more reliable and better performing.


You'll really need to get a kill-a-watt to even know wether you need to trim the mesh back. How do you figure you need to lower the watts if you don't know what they are?
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  #1000  
Old 08/10/2007, 01:36 AM
JohnL JohnL is offline
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This thread was automatically split due to performance issues. You can find the rest of the thread here: http://archive.reefcentral.com/forum...readid=1181623
 

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