Durso Drain Help?
I made a Durso for my 90 gallon corner. It has a 1" bulkhead and I made the Durso out of 1 1/4" pipe with a reducer at the bulkhead. I have a Mag 9.5 pushing water with aprox 5' of head. I have the pump gated back with a gate valve and it is about 1/4 closed. I started with 9/64 hole and have worked my up to 1/4 hole. The water level is constant but I still have the gurgling sound. I have the discharge pipes about 1-2" under the water in the sump. I also have them on gate valves and have them gated back a little. I tried putting a piece of air line tubing in the hole and the level started to raise and lower. I put a valve on the air tubing and it did the same thing. What can I do to quite it down a little? I have the "L" that comes off the standpipe about 2" under the water or 2" under the overflow fingers. By making the hole bigger water does that do?
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