TotalPond Replacement Filter Pads for the 900 Gallon Pressurized Pond Filter (PF850) and 1200 Gallon Complete Pond Filter with UV Clarifier (PF1200UV)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Used for models PF850， PF1200UV</li><li>Includes a coarse black filter and fine blue filter</li><li>Filter pads should be changed yearly</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41nf0PB7BxL.jpg" noproxy>