Leisure Time Renew Tablets 1.75 Lbs P/N: 45305A A non-chlorine shock treatment conveniently packaged in easy-to-use tablets that quickly dissolve in spa water and break down residual soaps, deodorants, natural oils and organic materials before they have a chance to form combined chlorine. Features: Fast-dissolving effervescent tablets Dissolves quickly to eliminate oils and residue Does not affect pH level No chlorine-like odors Chlorine-Free Allows for use minutes after application Formulated with DuPont Oxone. Applications: After Each Use: 1. Turn on filtration system. 2. For each 250 gallons of water, place 3 tablets into spa water. 3. Run filtration system for 15 minutes with cover off. 4. Repeat process once a week to help maintain clear, odor-free water. Tips: Using OZ to shock treat the spa after each use will oxidize contaminants and keep the water clean and clear until the next time the spa is used. Compatible With: Chlorine, bromine, ozone and mineral purification systems.