Drytec 1-1901-24 Calcium Hypochlorite Chlorine Shock Treatment for Swimming Pools, 1-Pound, 24-Pack

HOW TO USE: Use entire contents of bag when opened. If any granules settle to the bottom of the pool use brush to disperse. Add the recommended dosage of this product during evening hours while the filter pump is running. When adding this product to your pool, broadcast the product evenly over a wide area in the deepest part of the pool. If any granules settle to the bottom of the pool use brush to disperse. WATER BALANCE: For best product performance, swimmer comfort, and crystal clear water: Maintain pH in the range of 7.2 to 7.6. Maintain total alkalinity in the range of 60 to 120 parts per million (ppm). Maintain calcium hardness above 200 ppm. Use a reliable test kit that measures all these ranges. Use our pool care products to make adjustments. Follow label directions for each product. Do not enter pool until the free available chlorine residual is 1-4 ppm for each of the below noted water treatment applications. OPENING YOUR POOL: For best results, see the “WATER BALANCE" section above before treatment. Always adjust and maintain pH in the 7.2 to 7.6 range. Follow “SHOCK TREATMENT" directions on this package. Allow 30 minutes for product to disperse. Test free available chlorine residual with a pool test kit. Repeat treatment as needed. ROUTINE CHLORINATION: For best results, see “WATER BALANCE" section above before treatment. Throughout the pool season, adjust and maintain pH at 7.2 to 7.6. check available chlorine with a suitable test kit. SHOCK TREATMENT/SUPERCHLORINATION: For best results, see “WATER BALANCE" and “HOW TO USE" section above before treatment. Every 7 days, or as necessary to prevent pool problems, shock treat/superchlorinate the pool by adding one bag of this product per 10,000 gallons of water to provide 5 to 10 ppm available chlorine. Additional shock treatments may be required to correct problems which are caused by visible algae, high bathing loads, heavy wind and rainstorms. Additional shock treatments may also be required to correct problems such as unpleasant odors and eye irritation. Check the available chlorine with a suitable test kit. STORAGE AND DISPOSAL: Keep this product dry in its tightly closed container when not in use. Store in a cool, dry, well-ventilated area. Keep away from heat or open flame. Nonrefillable container. Do not reuse or refill this container. Rinse empty container thoroughly with water to dissolve all material prior to disposal. Offer for recycling if available. Do not contaminate food or feed by storage or disposal or cleaning of equipment.