It looks like those require an overflow box though. If that's what it takes, I may do that.
Unfortunately it's just a room over from my theater. It gets annoying during a movies quiet scene. If it was just white noise that would be fine, but this is flat out LOUD. I was doing some research though, it seems that the gurgling could be caused by the PVC not being large enough, which causes a siphon instead of a gravity flow. It is louder the faster I have my pump set to. I used 1" PVC and a pump that has a max flow rate of 1050. On the lowest setting with a 5 foot return height, I would have assumed I'd be down in the 600-700 range, but that's a guess. Either way, I guess it may be to much flow for this setup.Just rewind your life to your teen years, and then spend the rest of it listening to loud music, loud motors, loud gunfire...operative word is loud.
Worked for me! I'm so deaf now that I'm barely aware of all that "white noise" from my overflows, pumps, aerators, etc. No need to worry about Beans and Herbies and Dursos and Animals and...well, you get the idea. The most complicated thing I need to deal with when setting up an overflow is the length I need to cut the pipe.
