DryTec 1-1901-24 Calcium Hypochlorite Chlorine Shock Treatment for Swimming Pools, 1-Pound, 24-Pack
- Fast-Acting Quick-Dissolving Swimming Pool Sanitizer.
- Kills bacteria, controls algae, and destroys organic contaminants in pools.
- Recommended Dosage: 1 pound per 10,000 gallons of water.