Ready for connection and complete, this compact flow filter set guarantees clear, healthy, and clean water in your pond (for ponds up to 5000 liters or 2500 liters with fish stocking). The integrated UVC pre-treatment unit effectively removes suspended algae and cloudiness. This is supported by the four different filter media of the multi-chamber filter: Japanese mat filter, coarse and fine filter foam, as well as a bio-surface element, along with two flow-regulating partitions. The set consists of a multi-chamber flow filter with multiple filter media, an integrated UVC pre-treatment unit (with 7 watts of power), a powerful filter pump, and a filter hose.