Aquaclear Activated Carbon Insert， 30-Gallon Aquariums， 3-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Adsorbs odors， discoloration and impurities</li><li>Designed to fit the AquaClear 30 filter</li><li>Suitable for aquariums between 10 to 30 gallons</li><li>3-pack; Economical way to purchase inserts</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/51klBYCVdjL.jpg' noproxy></br>