Elite Foam Cartridge for Hush 20 Power Aquarium Filter， 2-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Hush 20 foam inserts is an effective mechanical media that removes debris from the aquarium</li><li>It encourages populations of beneficial bacteria that are important in maintaining the proper biological balance in the aquarium</li><li>Includes 2 cartridge per pack</li><li>Measures 1-inch length by 4-1/2-inch width by 6-4/5-inch height</li><li>This product weighs 0.02-pound</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/512pxVAHNUL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31nmXcWNqXL.jpg' noproxy></br>