Mine are doing great! I've put together a discus tank with 4 discus, 10 lemon tetras, 10 rummy nose tetras and 3 clown loaches. It looks great. Hae to clean one of my 75gs today. Just got back from the store, picked up another API NEXX canister filter with an extension, I love these things. I'm not happy with the Penguin HOB filter that is on the 75g I need to clean today so figured I'd go ahead and get a new system for it. Have a great Day!
I'm using petco air pumps and they are pretty quite. I had to put towels under them to buffer the vibrations. The other pump I tried was awful.