A perfect pond solution for ponds sized up to 10,000 litres (2,200 gallons). The filter supplied boasts a built-in 9w UVC and by simply twisting a knob on it automatically cleans itself! In the \'run\' position the water undergoes a 4-stage purification process. Simply turn the knob to \"Clean\" and the foams are squeezed by up to 1,000lb of water pressure forcing out pond sludge. The back-flushed dirty water is then pushed out through the second waste outlet (typically down the drain or flowerbeds). (Note, figures based on pond in full shade with water plants - 5,000 litres for ponds in full sun). This set contains the following components (please click links below for more information): • Fish Mate 5000 pond pump • Fish Mate 10000 pressure filter * Saving made when compared to buying items separately.