The filter in this superb set can be cleaned without opening the lid! Simply switch to \'waste\' mode and scrub the dirty filter sponges via the external handles, before letting the dirty water exit the special waste outlet (see attached pictures). Also features a high powered 11w UVC, filter foams and biospheres in the bottom chamber. The pump in this set handles 6mm solids and boasts low running costs. This set contains the following components (please click links below for more information): • Laguna Max-Flo 4000 pond pump • Laguna Pressure-Flo 6000 pressure filter * Saving made when compared to buying items separately.