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Old 01-11-2014, 07:29 AM
The Guy The Guy is offline
busy with fresh water.
 
Join Date: Dec 2011
Location: Kelowna, BC
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Quote:
Originally Posted by MinPhase View Post
I wouldn't put a gate valve on the overflow simply because the flow is only controlled by the rate of return, if you restricted outflow from the display using a gate valve your tank would simply overflow. The only time you restrict flow is on the output side of a pump.
A gate valve on the flooded 1" overflow refers to a "Herbie" super quiet and safe system and is done all the time, the second 1" is an emergency overflow that is located just slightly above the set water height in the tank to prevent a flood from happening. The size if the 2 pipes from the DT overflow to sump depends on the flow you require, I just used 1" as an example.
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Hey! I never "LEFT" the hobby, just doing fresh water now. Which is still listed as part of Canreef if I'm not mistaken.

Last edited by The Guy; 01-11-2014 at 07:31 AM.
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