Whisper Air Pump (100) The New Shape of Silence. Designed from the ground up for silence and performance.
Minimal noise, maximum air flow. The Whisper Air Pump's dome shape actually flattens sound wave frequencies. In addition, each model features sound-dampening chanbers designed specifically for that model. And the air pump's rubber feet and suspended motor prevent sound waves from reflecting off surfaces such as tables and shelves. Available in models for tanks from 5 to 100 gallons, Whisper Air Pumps provide powerful flow of air.
I ordered 2 or these pumps. One I am using the other is a backup. It is nice a quiet (for a 100 gal. pump) It's quieter than the Petsmart "top fin" brand 40gal. pumps. It seems to be pumping air just fine so far (a week). These kind of diaphragm pumps wear out if they are under heavy back pressure so that's why I ordered a backup. I would have given it 5 stars but its not even made by Tetra. Its made for Tetra... in China :(
no problems by ramon from Jacksonville, FL10/08/2011
purchased two pumps-received fast.without any problems,would buy from you again,Thanks.