Maximum pond size is 3,000 gallons with average fish load (under 50lbs). Pump flow rates: 1,200 - 3,100 gallons per hour Bio Ball filtration cultivates helps convert ammonia and debris into healthy nitrates that promote a healthy pond environment Bult-in 18-watt clarifier with bulb assists in water clarification. Glowing monitor indicates clarifying light is functioning properly. Visible indicator signals when pressure filter requires backwashing. Glowing monitor indicates light is functioning properly Visible indicator signals when pressure filter requires backwashing Heavy duty, watertight housing is easily accessible for filter maintenance. Can be partially buried to conceal filter. Inlet/Outlet Barbs Accept Multiple Hose Sizes. 120 Volts, 60 Hz. Cord Length 23 Feet. Half Off Ponds Pressure Filter with 18-Watt Clarifying Light for Ponds up-to 3,000 Gallons Half Off Ponds pressure filter, for ponds to 3,000 gallons. Maximum pond size is 3,000 gallons with average fish load (under 50lbs). Pump flow rates: 1,200 - 3,100 gallons per hour. 2 stage mechanical filtration removes coarse and fine floating particulate. Bio Ball filtration help convert ammonia and debris into healthy nutrients that promote a healthy pond environment. Built-in clarifier helps give you clean, clear, healthy water. Glowing monitor indicates light is functioning properly. Visible indicator signals when pressure filter requires backwashing. Heavy duty, watertight housing is easily accessible for filter maintenance. Can be partially buried to conceal filter. Inlet/outlet barbs accept multiple hose sizes. 120 Volts, 60 Hz. 23' Power cord How it Works: Mechanical Filtration: This first stage of filtering removes suspended debris. Water is pumped into the filters and passes through separate layers of filter media - coarse and fine layers - to effectively remove all sizes of unwanted debris. Water Clarification: The final filtering stage uses light and adds clean, clear, and healthy water back to your pond. Cleaning Your Filter: Flushing the filter to remove dirt and debris is as easy as shutting down the pump, rotating the valve from filter to flush, and turning the pump back on for as long as it takes for the water to run clear. When the water runs clear, you can stop back flushing and return to normal operation.