Perfect solution for goldfish ponds up to 40,000 litres (8,800 gallons) or mixed fisheries including koi to 20,000 litres (4,400 gallons). This compact multi-bay box filter employs foam cartridges, brushes and Flocor media to ensure your dirty pond water is thoroughly filtered. It has a powerful 80w UVC unit built into the lid to keep your water clear of green water and it\'s a doddle to clean by utilising the quick action back flush. A full de-sludge is also available by a simple hose attachment (all filter media is held above the filter floor so valuable friendly bacteria will not be harmed by this process). The pump supplied can handle solids up to 10mm and has very low running costs of just 180w. This set contains the following components (please click links below for more information): • Hozelock Aquaforce 15000 pond pump (note: skimmer not included when purchased in this set) • Lotus Clear Pond 80 box filter * Saving made when compared to buying items separately.