Pool systems are designed to help provide filtration to your water. Some systems such as sand filters can function as stand alone devices while disinfection systems such Pool UV systems must still be accompanied by a pool and spa filter. The pool and spa filter will provide prefiltration, reducing particles like sand, silt, and sediment from your water while a pool filter system, such as an ultraviolet light system, delivers microscopic contaminant reduction. Get the most out of your pool this summer with a pool filter system!