Use Blitz Spa Shock weekly to eliminate contaminants in your spa and to restore the water to a clear, fresh look. Blue Wave Renew spa shock can be used in conjunction with Go Brom as part of a 2-part spa sanitation system that is completely chlorine free. Active Ingred.: Potassium Monopersulfate
Dosage rate: 2 oz. per 500 gallons, or more frequently during periods of heavy bather loads.
