DryTec Calcium Hypochlorite Chlorinating Shock Treatment for Swimming Pools, 1-Pound (Pack of 24)
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24 bags (1-pound each)Fast-Acting Quick-Dissolving Swimming Pool Sanitizer
Kills bacteria, controls algae, and destroys organic contaminants in pools
68% calcium hypochlorite
Recommended Dosage: 1 pound per 10,000 gallons of water