All the pools have a filtration system to keep the water clean, free of algae and bacteria. The two most important components of the filter are the filter and the pump. The pump, by means of an electric motor, turns a turbine, sucking water from the pool through the skimmer and drain. The water is driven into the vacuum chamber, which is the pump housing. The water passes to a tank or tank that contains a special filtering material (flint or eco-filtering glass), which carries out the physical treatment (filtration) of the water. Most of the impurities contained in the water are retained in what we call the filter bed. The diffuser, located inside this tank (filter), helps eliminate air bubbles.