It’s great besides being a little noisy. I added more rubber to reduce the vibration and noise. I use it for compost tea in a 5 gal. Works great, I could’ve maybe gone the next size up but it is works just fine.
This pump does a great job on what it's suppose to do, the only complaint I have is it's quite loud. I saw other reviewers saying it was quiet, that's simply not the case, this is one of the loudest pumps I've ever had, and honestly it's not surprising this pump wasn't made for noise reduction it's made for industrial strength air pumping.