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Rick55555
05/27/2008, 09:16 PM
I just moved and pieced my 150 gallon back together. I’m experiencing difficulty with my overflow. Any help would be appreciated…

I have a 150 drilled with a 1.5” overflow. I use a Mag 18 (1800gph) for my return. My overflow consists of a bulkhead and strainer at the top back right of my tank. Behind the tank, the overflow has a T valve and the PVC descends down into the sump. On top of the T valve, I have a pvc “cap” with two holes in it. I turn the cap to allow varying amounts of air in/out in order to curb noise and control overflow speed.

At the moment my sump level will not stop fluctuating. The level fluctuates by approximately 5 inches every 10-20 seconds. The fluctuations are prompted/followed by a gurgling/flushing noise.

Please, Please, Please help me.

Thanks in advances…

Rick

dc_909
05/27/2008, 10:06 PM
Did you have this problem before moving? Anything different? Have you tried removing the Cap just to see if that helps with fluctuating?

shag26272
05/27/2008, 11:23 PM
I would put a valve on the pump and throttle it back a little bit, sounds like you are coming close to maxing out your drain.