15kg Granular L146 and N-AR 1060 of act 36 of 1947. Non-stabilised chlorine killing algae and bacteria, while being gentler on skin. Can also be used as Shock Treatment with faster dissolving granuals. Directions for use: (Based on a 50 000l pool). Use only as directed. Maintain pH between 7.2-7.6 in Marbelite pools or 7.0-7.2 in Fibreglass pools. Test and correct weekly. Dose: With pump running on filter setting. Add 1 cup (250g) 50 000 liters around the sides of the pool in the early evening. Daily or every 2nd day (maintain 1 -3ppm free chlorine). Very important: In case of vinyl or colored pool lining, add HTH Granular & Mineralsoft directly into the weir to prevent bleaching. Shock Treatment: To treat algae, discolored water or due to extreme conditions (i.e., extreme weather, high bather load, etc). With the pump on the filter setting. Add 3 x normal dose of HTH Granular & Mineralsoft. Test and correct pH after 12 hours. Only enter pool water when chlorine level is 3ppm.