i learned how annoying air pumps and bubble strips or stones can be at night, so at first i was using check valves and turning the pumps off. when my mom complained about the noise THROUGH the wall, i decided to stop using them. as for the filter, make a diy quieter, you could put a peice of plastic under the filter exit and have it run into the water, which would help a little bit. when i first had my tank set up again the waterfall sound drove me crazy(which is weird cause i like the sound of crashing waves.) but i have grrown to like it as i did before, so im good, but everyone else still hates it.