This set includes two pressurised pond filters to make it capable of effectively ponds containing up to 28,000 of water. These pressure filters provided can be cleaned without opening the lid, simply switch to \'waste\' mode and scrub the dirty filter sponges via the external handles. The dirty water then exits the special waste outlet (see attached pictures). It also features two 25w UVCs (50w total), filter foams and biospheres in the bottom chamber. The MaxFlo pump in this set handles 8mm solids and boasts low running costs. It can all be connected together with a T piece and connecting hose. This set contains the following components (please click links below for more information): • Laguna Max-Flo 16500 pond pump • 2 x Laguna Pressure-Flo 14000 pressure filters * Saving made when compared to buying items separately.