A fantastic pump & filter set by Hozelock for small koi ponds up to 2,500 litres or goldfish ponds up to 5,000 litres. It features a highly efficient mechanical and biological filter as well as a pond pump that features 6mm solids handling capabilities and requires a relatively low running costs. This set contains the following components (please click links below for more information): • Hozelock Aquaforce 2500 pond pump (note: skimmer not included when purchased in this set) • Hozelock Ecocel 5000 box filter * Saving made when compared to buying items separately.