Pondmaster 4000 Pressurized Filter System With 40 watt UV Designed to filter ponds upto 4000 gallons The Pondmaster Pressurized Filter System features a unique, manually operated agitator for dislodging over 90% of the pond residue that accumulates in the filter chamber. This patent pending feature is employed during the backwash and rinse operation. Agitator unlocks waste from media saving the amount of water discharged during backwash and rinse cycles Unique, patent pending 3-way master valve locks into “run”, “rinse”, and “backwash” settings Clear-vue inspection port to monitor water clarity during backwash/rinse operation Positive pressure lock ring to ensure a tight water seal Reusable Bio-Matrix Media affords maximum surface area for beneficial bacteria growth Heavy duty poly canister can be buried for hidden installation Integrated waterproof UV transformer Optional field-installed bottom drain available (not included) Can be easily operated using a single energy-efficient magnetic-drive or similar pump. (not included) Does not require a high-pressure pump to back wash. 2503305045 Most Orders Shipped Out Same Day! Premier Ponds LLC pondinfo@premierponds.com U.S.A. Copyright © 1999 - 2007 Premier Ponds LLC, North Salem, New York. All rights reserved. Thermo-Pond Heater 3.0, Aquascape Designs Pond Kits, ScareCrow Sprinkler, Nursery Pro Micro Pond Kits, AquaClearer, Microbe-Lift, Great Blue Heron Decoy, Pond Liners, Thermo Pond Heater & Deicer, Premium Koi Food, Select Koi, Butterfly Koi, Pond Aeration Pumps, Flexible PVC Piping, BioFalls, Skimmer, Aquascape Pumps, Cat Stop!, Animal Control Products, Pond Netting.