Review on Hydrofarm AAPA15L Active Aqua 4 Outlet Air Pump - 6W, 15 L/min Flow Rate, Silver by Robert Edmondson

It's louder than the one I had and I tried to find a quieter one. I didn't keep it, I returned it, so I don't know how long it would take. As this is NOT what is advertised it is not worth the money at all. If it was really quiet everything would be fine, but if you are promoting something as a specific thing. Better make sure your product does what you say it does. This air pump is so loud I can hear it from the room next to the aquarium room. It's about 50 feet from the air pump. so VERY LOUD!