CNZ® Aquarium Filter Media Kits</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Removes odor， colors， organic pollutants</li><li>Removes toxic compounds， medications</li><li>Extremely porous ceramic media for efficient biological filtration</li><li>Clarify your water naturally and cultivate beneficial bacteria with these polypropylene bio-balls</li><li>Increase dissolved oxygen levels</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/51pG%2Bg-QUbL.jpg' noproxy></br>