This pond pump and filter set can service goldfish ponds up to 12,000 litres (3,000 gallons) or koi ponds up to 6,000 litres (1,400 gallons). This filter was introduced in 2013 and boasts the best EasyClean system we have ever seen. The usual foam \'rings\' have been replaced by cubes which are broken up by the internal paddle during cleaning to disturb the debris. This set contains the following components (please click links below for more information): • PondXpert UltraFlow 6000 pond pump • Hozelock Bioforce Revolution 9000 pressure filter * Saving made when compared to buying items separately.