Plumbing question

[Ucantwin]

I am setting up a 75gallon and am going with a beananimal overflow. The overflow box I have has 3 - 3/4 drains. I am not sure if having one of the 3/4 drains used for my full siphon will be enough flow. So, my question is will I get more flow if I use an adaptor from the bulkhead to use 1" plumbing, will it increase my flow at all, or is the 3/4 siphon enough flow?

 

[full sinthetik]

Depends, how big of a pump are you gonna be using as a return?

 

[Ucantwin]

A jabeo dc 6000, I can change the flow rate on it.

 

[kmbyrnes]

It will be more than enough. You are not looking for flow as much as getting water to your sump. According to this calculator, if you have a 2' drop from your overflow to a submerged discharge in your sump, your 3/4" drain can handle over 900 gallons an hour. ReefKeeping Magazine and others recommend only 3-7x turnover through the sump so you would be shooting for 375 to 525 gph for your 75 gallon DT, Even at 10x, you would still be in the ballpark.

Siphon Calculator:
http://www.beananimal.com/articles/hydraulics-for-the-aquarist.aspx

Sump :
http://reefkeeping.com/issues/2008-01/newbie/index.php
http://gmacreef.com/turnover-flow-rate-through-sump-reef-tank/

 

[Ucantwin]

Thanks so much!