Guest clownfish4 May 14, 2004 Share May 14, 2004 How do overflows work? And how do you make them? I was thinking about buying a HOB filter and just plumbing a drain into it then put a ball valve on the return. Link to comment Share on other sites More sharing options...
JMsAquarium May 14, 2004 Share May 14, 2004 Here you will find a basic info on how an overflow works http://www.cyberreefguru.com/general/overflow/overflow.html Link to comment Share on other sites More sharing options...
Guest clownfish4 May 14, 2004 Share May 14, 2004 I'm actually looking for the precise way the overflow itself works, not the system. Is it gravity powered? And if so, how does it start/stop, not overflow when the power kicks, etc. Or does it use a pump? Link to comment Share on other sites More sharing options...
peacetypes May 15, 2004 Share May 15, 2004 siphon, i guess you could also say suction? Robert Link to comment Share on other sites More sharing options...
Guest andrejka May 15, 2004 Share May 15, 2004 Check this site out: Melev's "textbook" on overflows In particular, this page: DIY overflow But I'd rather buy one. LifeReef's are reputable ones (expensive, though...). Best solution (if your tank is empty yet) - drill it... Link to comment Share on other sites More sharing options...
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