Spa ozonators have repeatedly been proven to purify and sanitize pool and spa water faster and more effectively than traditional chemical methods. With spa ozonators, water is treated up to three thousand times faster without undesirable byproducts such as chloramines and bromamines (created by chlorine and bromine chemicals). Ozonator's primary byproduct is life-giving OXYGEN! PH and alkalinity must be maintained and an occasional non-chlorine or oxidizer shock should be used.