View Full Version : Tank is surging

09/09/2017, 05:28 PM
Started my 120 for the first time today. The water level in my sump goes up and down about 3/4 of an inch and you can hear it surge. The tank has dual returns. Is this normal or do I need to throttle back the return pump? Any advice is much appreciated as the surging is kind of annoying.

09/09/2017, 05:37 PM
Throttle it down a bit.

09/09/2017, 07:09 PM
you need to adjust either the pump or the over flow drains Depending on the type of drains..

09/09/2017, 07:32 PM
I dialed down the return pump to a little over half flow and and now the water level is staying constant and the surging has stoped. Am I hurting anything by slowing down the turnover rate?

09/09/2017, 07:44 PM
nope just means your pump is more then overflow can handle.

09/09/2017, 09:09 PM
Since you've not provided any information on flow, hard to say whether you have too much, not enough or just right.

09/10/2017, 04:49 AM
My Oceanic tank did that too. Dial the pump down and add a propeller pump to give extra flow. Works great now.