CNZ Media Filter Bags Activated Carbon Charcoal Aquarium Fish Tank Pond Canister Filter， 4 lb.</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Removes odor， colors and organic pollutants</li><li>Removes toxic compounds and medications</li><li>Fast working and long lasting</li><li>Using one bag for every 60 gallons of water</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/51EBvMyMo-L.jpg' noproxy></br>