[RECOMMEND] To replace the chamber Annually ensures proper function . The Chamber can last 1-2 swim seasons depending on your climate and the load. [KEEP SAFETY] provide Natural Minerals into pool water, it helps to keep safety , your family and the environment. Prevent swimmers from Itchy skin, irritated eyes or swimmer's ear. [A MUST HAVE] Therefore, to clean pool water with ionizer Hybrid Pool Treatment System be more healthy and eco-friendly. And you need to replace the chamber for the system when the red lights turns on. [APPLICATION] Replacement Chamber for Ionizer Hybrid Pool Treatment System and Perma Salt System. Pool Type: Above-Ground Pool, / Spa, In-Ground Pool. The Chamber is designed for swimming pools up to 40,000 gallons [PERFORMANCE]The Chamber is not a filter or a . It is the tube chamber that holds the copper and silver electrode bars that are dispersed into the swimming pool water.