Max. Pond Volume: 5000 litres (1100 gallons) Recommended Pump: 3500 litres per hour (770 gallons per hour) UV: 9Watt - PL2 - G11 Lamp Voltage: 220 - 240 V Frequency: 50Hz Power: 26 WattsThe Bermuda Pressure Filter 5000 has a compact design. It combines mechanical and biological filtration with an in-built 9 Watt Ultra Violet Clarifier to create clear, healthy water. Being a pressurised filter, water can be pumped up hill out of the unit to feed watercourses or return to the pond while the filter remains hidden. Sponges can be cleaned at the turn of a handle. Ideal for use on ponds up to 5,000 litres (1100 gallons) with a recommended pump of 3,500 litres per hour (not supplied). The 9 Watt UV-C will help to keep ponds clear of green water.The Bermuda Pressure Filter 5000 has a compact design. It combines mechanical and biological filtration with an in-built 9 Watt Ultra Violet Clarifier to create clear, healthy water. Being a pressurised filter, water can be pumped up hill out of the unit to feed watercourses or return to the pond while the filter remains hidden. Sponges can be cleaned at the turn of a handle. Ideal for use on ponds up to 5,000 litres (1100 gallons) with a recommended pump of 3,500 litres per hour (not supplied). The 9 Watt UV-C will help to keep ponds clear of green water.