Kem-Tek Shock Quick 10 is a patented fast acting shock treatment that removes organic wastes. One bag treats 10,000 gallons of pool water. Use to super chlorinate (shock) for treatment of algae and bacteria. Clarifies pool water and reduces other chemical needs. When used on a weekly basis Shock Quick keeps water clean and sparkling. With Shock Quick you can resume swimming in as soon as 15 minutes. Package contains 10 bags.