HTH Shock It Pouch 500g

Kills bacteria & algae. High strength. Quick dissolve, fast acting. Non-stabilised chlorine. Size: 500g Directions for use: Test your pool water using either your HTH 4-in-1 Test Kit or HTH Quick Test Strips, maintain your pH between 7.2 - 7.6. In the early evening, add one sachet of HTH Shock It or HTH Super Shock It around the sides of the pool. Run the filter for 24 hours. After the first 12 hours, check and re-correct the pH level. Continue with normal chlorination program.