This Zodiac Titan CF100 cartridge filter system is ideal for maintaining a clean and healthy swimming pool. It is extremely water efficient and is ideal for pools with confined filtration setups. There is no need to backwash, you only need to simply hose down the element when required. This saves on average of 750 litres of water per time. This cartridge filter filters dirt down to 8 microns and opposed to a normal sand filter which only filters down between 15-25 microns. This ends up leaving your pool cleaner and safer.