Fluval U2 Underwater Filter Poly/Carbon (Pack of 2)</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Provides effective chemical filtration</li><li>Custom fit for the Fluval U2 Filter</li><li>Traps fine debris， improves water clarity and removes impurities</li><li>Easy to replace</li><li>Works in freshwater， marine or reptile environments</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/41ChQ9eInYL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41qNzNWqx7L.jpg' noproxy></br>