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View Full Version : Gurgling from one of my overflows.


Reef Creep
08/10/2014, 03:16 PM
I recently set up my tank. I sold my old one and bought a used one. It's a 150 with 2 overflows and 2 returns. The one on the left fills up then gurgles and slurps loudly as it empties and then it repeats over and over and over. Any suggestions?

pbs1914bcc
08/11/2014, 08:53 AM
i notice this on my 120 as well from time to time. i correct by dialing back the speed of the return pump.

following this one.

leveldrummer
08/11/2014, 09:25 AM
Your return is too strong for that pipe, the drain isnt draining fast enough, it fills to the point that it covers any air holes, then it starts a siphon and empties the overflow till it breaks siphon.

Im either the pipe is restricted, or it has more elbows and turns then the other side. Or maybe the tank is just slightly off level so it is overflowing more water into that overflow then the other.