Ocean Clear Replacement Cartridge for 325 Filter</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Replacement cartridge for the Red Sea Ocean Clear 325 Canister Filter (25 Micron， 25 sq ft).</li><li>Can also be used with any of the Nu-Clear Canister Filters.</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/51x0VkT%2BesL.jpg' noproxy></br>