HTH EXTRA SUPER SHOCK
HTH Extra Super Shock is made of 75% available chlorine and a formula that is 15% stronger than regular HTH shock. Use HTH Extra Super Shock weekly to kill algae and bacteria and keep your water the beautiful light blue that every pool owner wants. This fast-dissolving formula quickly revitalizes your tired and dirty pool water and helps provide a safe and balanced experience. Make sure your pH is between 7.2 - 7.6 before shocking and test your water regularly to know when to use this shock.