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GLB 25 lb Supersonic Shock (73% Cal Hypo) GLB???SuperSonic??sanitizes,??clarifies, fights algae and won?۪t??over-stabilize pool water. It is??safe for use on all pool surfaces??and leaves no residue. Contains 73% available chlorine. ACTIVE INGREDIENTS: Calcium Hypochlorite??_...................... 73% OTHER INGREDIENTS??_....................................27% OTHER INGREDIENTS: ........................................70% Available Chlorine 70%

• Use pH down to lower the pH of your pool water.
• pH should be maintained between 7.2-7.8.
• 8lb bag