Product details:

Quickly eliminate unwanted bacteria and algae in your indoor and outdoor swimming pool with a 1lb bag of HTH Super Shock! It is convenient, easy to use and won't over stabilize your pool. One bag treats 13,500 gallons. TO USE: Make sure your pH level is between 7.2 and 7.8 and adjust if needed. Check that your pump is running and then snip the corner of the shock product. Broadcast over a wide area in the deepest part of your pool. If the granules settle at the bottom, use a brush to disperse them. When your free available chlorine levels are between 1 and 4 ppm, your pool is ready for action. Ingredients: Ingredients: Calcium hypochlorite 56.44%, other ingredients 43.56% Active Ingredients: Calcium hypochlorite