Flow suggestions

JJLigs · Dec 14, 2020

So I have a 90 gallon that is drilled for a center overflow I am looking to run an about 35 gallon sump. I need to order a new overflow tower for the center and was wondering what GPH you would suggest running in this tank? They offer 700, 1200 or 1800 GPH weir teeth.

nereefpat · Dec 14, 2020

700 gph would be enough turnover from the display to the sump, but there are other factors to consider.

I would want at least 2, or possibly 3, 1" drains. It depends on if you want to run a Bean or Herbie. Length of weir for surface skimming is also something to consider.

Hope that helps. Is there a specific brand or model here?

JJLigs · Dec 15, 2020

My tank is plumbed for the over flow and return to come out of the same spot so I only have one drain

nereefpat · Dec 15, 2020

JJLigs said:
My tank is plumbed for the over flow and return to come out of the same spot so I only have one drain

I took it as you were buying an overflow.

So your tank is drilled with 2 holes on the bottom, and you are replacing the in-the-tank box? In that case, I don't know without a little more info. Blindly, I would probably pick the middle option.

I would look into having both pipes as drains, as a Herbie drain system, and run a return or 2 over the back of the tank. I always recommend that over a single standpipe drain, for noise reasons.

Super Fly · Dec 15, 2020

nereefpat said:
I took it as you were buying an overflow.

So your tank is drilled with 2 holes on the bottom, and you are replacing the in-the-tank box? In that case, I don't know without a little more info. Blindly, I would probably pick the middle option.

I would look into having both pipes as drains, as a Herbie drain system, and run a return or 2 over the back of the tank. I always recommend that over a single standpipe drain, for noise reasons.

Highly agree, would help tremendously with noise.