Pond filter maintenance is now made even simpler with an automatic cleaning system. The versatile range of sizes works for most pond volumes and offers the option of installation above or below ground level. The easy-to-maintain pond filters offer combined UV and Biological Filtration for crystal clear purified water. Features: Easy installation above or below ground - UV Chamber - Easy to Replace UV Lamp - UV Lamp-on indicator - Settlement Chamber - Profiled Filter sponge for mechanical filtration (supplied) - Fish Mate SUPRA biological filter media (supplied) - Lid secured by single clamp ring allows easy access for filter maintenance. Max Pond Size: 500 gallons, Max Flow Rate: 350 GPH, Inlet Size: ¾” or 1” Barbs, Dimensions: 10-3/4”L x 10”W x 11”H.