joshbrookkate
New member
if i read this correctly you have a single drain line and it's loud, aka flushing sound. The reason is because the pipe is filling up with water and the water weight builds up to a point where it is released and it flushes out. It's a cycle, that will keep happening.
I run the return pump that you have wide open with a single drain line also. It's dead quiet...i have a valve on my drain line to restrict the drain flow, that means the pipe is always full of water.
This is not recommended by anyone, but it can be done safely if your return pump chamber is small enough that if your drain were to plug your display tank would hold that water without overflowing and secondly you have sometype of smart ATO with overfill protection.
If you don't have this or cant have that capability, then you should consider drilling the tank and adding an emergency drain.
This was my situation, too - A loud flushing noise.
Fixed it by doing the following:
Drilled a couple extra small air holes into the top of return pipe,
Extended the return pipe so it ended under the water in the sump, instead of splashing water into the sump,
Added a filter sock to the return pipe,
Turned down the flow from the return pump so it matched what my return plumbing could handle quietly.
Now it's absolutely quiet. A good thing because the tank is in my husband's TV room.
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