Poolife Swimming Pool Turbo Shock is the strongest shock treatment available to treat your pool. With 78% available chlorine, poolife® TurboShock® shock treatment works fast to combat algae and bacteria. It dissolves more quickly and completely and keeps pool water sparkling clean and clear with less work. Poolife TurboShock is a calcium hypochlorite shock used to combat algae and bacteria growth. This fast-dissolving shock keeps pool water clean and clear with less work. Comes in a box of 12.