How many holes in my 125

[jwblocal701]

well im planning on putting some bulkheads in that 125
how many drain and return lines should i put?
im going to use a iwaki 1500 gph pump i got in a sump

 

[Teremei]

Well since I bought mine RR and I don't have TOO much exprience with this. I can just tell you. That I have about a 1100 GPH panworld pressure rated. And I have 2 drains and 2 returns.

1 large hole and 1 small hole on each side, corner, back end, whatever. But with that GPH you deffinatly would have to have more than 1. I'm sure there is a calculator here for size of drain and return for GPH, ect. . I have 2 1 inch drains and 2 1/2 inch returns (I think). .

 

[jwblocal701]

hmm i dont know if i should put 3 drains and 3 returns or 2 and 2 or what

 

[prugs]

1500gph is alot of water going thru a sump.
Have you thought about a closed loop for the iwaki?

 

[jwblocal701]

thats just the only pump i have so i was going tyo use that for the filter

 

[jwblocal701]

bump

 

[RobTop]

My 220 has corner overflows. 2 holes in each one is for a 1.5 drain the other is a 1" return. So with 2 1.5 drains I have about 1800 gph rolling. I also added a 2' hole in the back to feed a dart for a CL. Early next year when I replumb and change the rockwork I'll be adding 4-1" bulkheads for returns from the CL dart.
My 125 tall has 2-1.5 returns drilled in near the top of each coener and handles 1000 gph with out any issues and it could handle much more. both of my 75's and 55 have 1's overflows and handles a mag 9 with out issue as well.
Hope this helps

 

[jwblocal701]

could u show me a pic of your 125 where the holes are?
would be great

 

[prugs]

The beauty of having a closed loop. Is you don't have to drill your tank for extra holes. Just go over the back, like a cannister filter.

 

[jwblocal701]

i need to drill the holes for a sump to use as a filter and the protien skimmer and stuff

i really dont like using a HOB overflow

 

[prugs]

Sorry I thought you already had a reef ready tank & just wanted some more flow. I would never recommend a HOB overflow. They should be illegal.

 

[jwblocal701]

if there are no hole drill it

 

[prugs]

<a href=showthread.php?s=&postid=8555976#post8555976 target=_blank>Originally posted</a> by jwblocal701
if there are no hole drill it

Lost me on that one???

 

[desjardiniidj]

<a href=showthread.php?s=&postid=8555872#post8555872 target=_blank>Originally posted</a> by prugs
Sorry I thought you already had a reef ready tank & just wanted some more flow. I would never recommend a HOB overflow. They should be illegal.

:lol: They should be illegal. The only place you should see them is in a museum or something. Maybe the garbage?

jwblocal- I think prugs meant that the feed lines can HOB. As for the amount of holes, its all about what you wanna do with the flow. 2-1.5" drains would more than take care of what you need(I like big drains). 2-1" fills would probably do. You could even come in w/ a 90 degree elbow and a T on each one. Maybe run one of the lines down low in the back for flow behind the rock...

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[Whaledriver]

I would decide if you want a closed loop first. If no closed loop this is my answer.
Make sure the tank isn't tempered glass!!!
Find a source for the overflows in plastic or make them from glass+ugly.
I would double up the glass in the area of the overflows and then drill. This keeps the bottom of the overflow from pushing in and allows for stronger glass and bigger hole.
Find the bulkheads before you drill. Schedule 40 is fine and gives you more flow.
If all out flow and redundancy is the way you want to go then 2 inch drains and 1 1/2 returns. These are big holes and that's where the reinforced glass pays off.
Install the bulkheads with silicone glass glue instead of oil. Glop in all over it doesn't have to be pretty

This is just my opinion for what its worth.
I think you should consider a closed loop for better efficiency of the skimmer and lower electrical costs. Think about what needs to go under the stand and the water needs of that equipment.