Works With Low Amp High Flow Pumps. Cyclonic Backwashing System. Media Will Not Clump Together. Mechanical And Biological Pond Filter. "For Biological And Mechanical Pond Filtration. Also Ideal For Aquariums Where Very High Flow Rates Are Desired. Compact Can Be Buried." "Durable Polymeric Material Plastic Rubber Abf Plastic. Seeded With Natural Bacteria. Compact Can Be Buried."
