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What changes would be made to Bromine for Beginners with a spa containing an ozonator. What changes would apply for ozonator and light usage-one person 4 times weekly-30minutes each? My ozonator runs 24/7 along with small filter recirculation pump-should I change it. Have I absorbed other posts which seem to indicate that an ozonator would not be desirable using Dichlor inlieu of bromine as it would deplete the chlorine?