Hey all, I am very proud to say I have plumbed my tank and have no leaks and it is very functional. HOWEVER... it is kinda loud. The whole thing is soft plumbing. I think the bubbles that are coming out of the drains are making the sound. When I put my hand under the drain it helped a lot. The drain does go below the water level in the sump. Another thing that is making noising is the anti-siphon hole in the return, it is producing a piddling sound. Anybody have any ideas as to quieting either of these noises? thanks, Tom