Even large pond owners are now seeing the benefits of installing a pressurised filter system. Until now pressure filters were designed for smaller domestic applications but this beauty will clean ponds up to 40,000 litres in volume (8,810 gallons). The key benefit of this filter is its sophisticated cleaning system. Simply stir the external handle to clean the dirty filter sponges inside the unit.An integrated 55 watt UVC keeps the water crystal clear. NOTE: UVC bulb included.