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!