Clearguard 1600 Pressurized Filter W/ Uv. For Ponds 5000 -8000 Gal PondsPONDMASTER CLEARGUARD PRESSURIZED POND FILTER keeps your pond fresh and clean with dual action biological and mechanical filtration. Clearguard's unique design filters with beneficial bacteria using bio media while at the same time, mechanically polishing water with a reusable filter pad. This system can be added to any pond and will effectively lower ammonia and nitrite levels in the water. With the available UV Clarifier installed, Clearguard