Tetra77852 Whisper Air Pump, 20-Gallon

This is the 3rd one I've bought, for my 3rd aquarium. It's right next to my bed and it's so quiet I have to check and make sure it's still working. They are all this quiet, but this one is bigger and it's still quiet.

This pump is a little louder than I would have liked, but supplies my 20 gallon tank with plenty of aeration!

Using in a 12 gal edge with 5" air stone and it works perfectly. Very quiet and pumps plenty of air.

Soooo quiet!!!! Works great with my sponge filter!

"Whisper" is not the best description. More like a low buzzing. I placed mine over a bit of foam to no great affect, and if the cords or anything touch it, it buzzes like crazy. It'll sound very loud at first until you attach a hose, so the video samples aren't entirely accurate. Those sound like a motorboat going by! I was more worried until I realized my hoses were part of the sound muffling.The more air you use, the louder it will become, but I think using less puts more stress on the pump.No check valve included. No airflow control lever included. Just the pump. If buying this, I recommend the Pawfly 2-Way Control Lever. It's always good to have a spare control anyway, in case of quarantine emergencies or upgrades. Their suction cups are garb, but their control is solid metal.