Whisper 20i In-tank Filter - Up to 20 gal.

This is a good filter, and it is Very quiet

Ths is a excellant filter, my fish tank is crystal clear thanks to Whisper. I'm so glad I purchase it two weeks ago. It is very quite too!

It's a little noisy and does an okay job of keeping the tank clean. I would consider buying this again.

It works fine but it can get considerably loud depending on your "lid" to the fish tank. The tank i got came with it and its extremely loud sometimes that I'm unable to sleep from the noise.

I have a 30 gallon. I bought this to use along with an aquaclear. The aquaclear does a grwzt job with bio filtration but it d I ent do a goid job withvthe mechanical filtration. I cant hear it at all. I replaced a Quiet Fl I w tgat was anything but quiet. I live in a very small house and I could hear that filter eve r ywhere, it drove me nuts. So I replaced it with this mechanical filter. My tank is literally 4 feet from my couch and I csnt h ear it at all. Not sure why other reviewers can hear it. Might be that they have very small tanks so the filter is possibly vibrating off more tank or rocis or decorations?? I got my sanity back with a quiet livingroom again. It is clearing up the tank fast too after stirring up the plant dirt a bit after I dud some plant maintenance.