TurboShock® is the strongest shock treatment available to treat your pool. With 78% available chlorine, poolife® TurboShock® works fast to combat algae and bacteria. It dissolves more quickly and completely and keeps pool water sparkling clean and clear with less work. Useful Tips: Shock treat at least once a week. For best results always ensure pH is correct before shock treating your pool. Good for all pool surfaces. No need to pre-dissolve. Click here to watch the poolife® TurboShock® shock treatment video.