Whisper In-Tank Filter with BioScrubber for aquariums</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Designed for Use in Smaller Aquariums Up to 20-GallonUses Large Whisper Bio-Bag Cartridges</li><li>Uses large Whisper Bio-Bag Cartridges</li><li>Provides convenient 3 stage filtration</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/51vgpMKAGPL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41lkFiXwelL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31FD-WIMuwL.jpg' noproxy></br>