Pondmaster Garden Pond Filter System KitPondmaster Filter System Kits combine the easy to use PondMaster Filter Box with a high tech fully submersible Mag Drive water pump. In this submersible pond filter water is drawn into a coarse filter pad to trap debris, then through a finer, carbon impregnated pad to further purify the water. Quick and easy installation Sits conveniently at the bottom of your pond Fountain head can be detached to attach to a waterfall feature if desired Filter media