Perfect pump and biological filter set for koi ponds up to 4,500 litres and goldfish ponds up to 9,000 litres. It contains a highly efficient mechanical and biological filter and a powerful filter pump will keep your pond perfectly clean, as well as a pump that features 6mm solids-handling capability and low running costs. There is no UVC featured with this model but this is reflected in the exceptionally low price. This set contains the following components (please click links below for more information): • Pontec Pondomax 5000 pond pump • Hozelock Ecocel 10000 box filter * Saving made when compared to buying items separately.