Kem-Tek 26449048231 10-Pack Super Shock Quick 20 for Swimming Pools;

Super Shock Quick 20 is a patented, fast acting shock formula that removes organic wastes. One bag treats 20,000 gallons of pool water. It controls algae and bacteria during super chlorination. Clarifies pool water and reduces other chemical needs to keep your pool clean and balanced. Produces clear, sparkling water in your pool when added on a weekly basis. he best time to shock your pool is in the early evening after sundown. With Super Shock Quick you can resume swimming in as soon as 15 minutes after application. Package contains 10 bags.