Tetra Whisper Air Pump</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>For Use in Aquariums Up to 40-Gallon</li><li>Minmal noise with maximum air flow</li><li>Has sound damping chambers with a dome shape to flatten sound wave frequencies</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/417Lgh1JmoL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/71HKB-z6sbS.png' noproxy></br>