Our premium, quick dissolving, unstabilized granular chlorine product. For use as a daily sanitizer or periodic shock treatment. A small, daily addition can be broadcast across the water surface. Add to bucket of water to mix prior to pouring around edges of the pool in cooler water temperatures. Ideal for those who prefer a daily, granular product to apply and to use when a strong chlorine shock is needed; algae treatments. chlorine demand issues, superchlorination treatments. Can be used as a regular preventative shock.