I finally got my 180gal with dual corner overflows up and running, but to keep my water level in my tank where it is not to high I can only go around 700gph, my drains have no problem keeping up with a faster flow but my overflow box cant handle the increased flow and the water level rises in tank to high.
Overflow box question
- Thread starter tankzombi3
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RobZilla04
Well-Known Member
700 gph through the filtration system is plenty. Worthwhile relevant video below.
Ron Reefman
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Reef Squad
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Article Contributor
Tampa Bay Reef Keepers
MAC of SW Florida
If you really want to increase the ability to flow more water through your overflow weir, cut the weir teeth a bit deeper and more water can flow over it. Or do what I did. I added some Gutter Guard to make a screen behind the teeth of the weir so the extra flow over the teeth wouldn't wash unwanted stuff down into the overflow. BTW, Gutter Guard is a roll of plastic 'screen' that will keep leaves from getting into and clogging up your gutters. It's not a bad idea to make a 'cap' or 'top' for your overflow so fish, snails and other critters don't get trapped down in the overflow.
