Overflows

[Guest clownfish4]

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.

[JMsAquarium]

Here you will find a basic info on how an overflow works

 

http://www.cyberreefguru.com/general/overflow/overflow.html

[Guest clownfish4]

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?

[peacetypes]

siphon, i guess you could also say suction?

 

Robert

[Guest andrejka]

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...