Tetra ReptoFilter Filter Cartridges</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Assembled and ready to use</li><li>Filled with Ultra-Activated carbon which absorbs odors and discoloration</li><li>Dense， dual sided mesh to catch debris and waste</li><li>Medium size fits the ReptoFilter 90GPH</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/51L73Ij%2BeEL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/417YiEnybRL.jpg' noproxy></br>