40 gallon overflow
Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: DIY
Forum Description: Do it Yourself
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=20175
Printed Date: July 17 2026 at 12:08pm
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Topic: 40 gallon overflow
Posted By: stephan
Subject: 40 gallon overflow
Date Posted: August 29 2007 at 12:09pm
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I'm thinking of downsizing from 100 to 40 gallons. Petco has that $1 per gallon sale going on. The tank is not drilled, but I want to put in an internal overflow. Here's my questions:
-How big does the overflow need to be?
-What size bulkheads should I use for supply and return if I only want one overflow?
It seems like 1" bulkheads are pretty standard, but that's usually for larger aquariums. Just wondering if I should use a smaller size for a 40 gallon.
Thanks in advance. ------------- Stephan Lovstedt Camarillo, CA 65 Gallon Glass |
Replies:
Posted By: Mike Savage
Date Posted: August 29 2007 at 1:20pm
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The overflow needs to have enough overflow area to handle the amount of flow your pump delivers. It does not need to go to the bottom of the tank unless then bottom of the tank is where it is drilled. Many tanks have tempered bottoms that can't be drilled. There is a huge flow difference between 3/4" and 1" pipe. I would still use a 1" bulkhead for the drain and 3/4" for the return.
Mike -------------  |