Originally Posted by SaltwaterNuB
How deep into the inlet socks do you put the PVC
I assume you mean where the waterflow comes from the tank into the sump. this can be kind of tricky while you make adjustments to the system depending on how it's plumbed. I beleive the general recommendation is to just below the water line. If you put them too deep into the water, air coming from the overflow can get trapped in the pipe until there is enough water pressure to force it out, creating a flushing effect along with a lot of noise at the overflow.
The way my sump was made, there was actually no pipe going into the sock. (I have an Eshopps sump.) There was just a little holder with a bulkhead in it that the pipe fastened onto. Using this method, you get noise at the sump end. I added some PVC
below the bulkhead to help with this issue.