The strongest Cal Hypo shock product in the industry! Dissolves quickly and completely to combat algae and bacteria and keep pool water sparkling clean and clear with less work.

• Step 2 of the MPT Extra™ System
• Shock treat at least once a week. For best results always ensure pH is correct before shock treating your pool. No need to pre-dissolve.
• Good for all pool surfaces.

Active ingredient: 78% Calcium Hypochlorite (Cal Hypo)