(2) Pondmaster Aquabelle Replacement Foam Filter Blocks for 250-700 GPH Pumps For All Mid-Range Pumps, 250 GPH thru 700 GPH Extra large foam prefilter Coarse polyester and foam offer biological, chemical &amp; mechanical filtration This filter media would also be a replacement for Aquabelle Kits 02282 and 02285 Part Number: 12285