This set is perfect for a large pond (up to 20,000 litres, 4,400 gallons). As the filter is pressurised it opens up the option to run the clean water to the top of a waterfall. It also incorporates a handle to redirect flow from the usual flow to backwash/clean, meaning you can clean your sponges without switching off your pond pump. The supplied pump is also included which handles solids up to 6mm and features a new \'ECO\' motor with low running costs. This set contains the following components (please click links below for more information): • PondXpert UltraFlow 12000 pond pump • PondXpert EasyFilter 20000 pressure filter * Saving made when compared to buying items separately.