SpaGuard Spa Shock 35oz Q721

Directions for use: For initial treatment 1. Apply 2 ounces per 300 gallons with the pump running 2. Run pump for 15 minutes after addition For routine maintenance 1. Apply 1 ounce per 300 galloons weekly 2. For heavily used spas, treat twice weekly Non-Chlorine oxidizer Part # 42624BIO SpaGuard Spa Shock 35oz