Fluval Foam Filter Block (204/205/306 & 304/305/306)- 2-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Provides mechanical filteration of large particles</li><li>Prevents premature clogging</li><li>Enhances biological filtration</li><li>2-pack; Suitable for Fluval : 204， 205， 206， 304， 305， 306</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/41slwB-TgvL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31bpmsW4k2L.jpg' noproxy></br>