POWERFUL NON-CHLORINE SHOCK!
Use Renew Shock to eliminate contaminants in your spa and to restore the water to a clear, fresh look. It is designed to remove chloramines that cause the unpleasant chlorine odor and enhance the effectiveness of the existing chlorine by reducing the formation of new chloramines.
Can be used in conjunction with Go Brom as part of a 2-part sanitation system that is completely chlorine free. Active Ingredient is Persulfate Compound: Potassium Monopersulfate
Dosage rate: 2 oz. per 500 gallons, or more frequently during periods of heavy bather loads. Best if used weekly.