In The Swim Sodium Dichlor Chlorine Shock Granules for Sanitizing Hot Tubs and Spas – Fast Dissolving, pH Balanced Sanitizer - 56% Available Chlorine, 99% Sodium-Dichlor – 5 Pound F035005040AE

Swimming pools and spas will always be at risk of contamination by algae, bacteria and other contaminants and microorganisms. This is why it is necessary to use high quality sanitizing chemicals such as In The Swim Chlorinating Granules on a regular basis to keep your pool water clean and safe for your swimmers. In the Swim's granular chlorine will swiftly and effectively eradicate bacteria and other organic contaminants from your swimming pool or spa without leaving any residue so you can enjoy clean, sanitized water and peace of mind. Fast acting granular chlorine is available in bags and buckets, and the calcium-free formula is favored by pool owners in hard-water areas.

• Versatile: Granular chlorine with the ability to be used in all types of swimming pools, spas, fountains, and water features.
• Powerful Sanitizer: Sodium Dichlor shock removes bacteria, breaks down organic contaminants, and eliminates algae.
• Calcium-Free Formula: Perfect for hard water areas—keeps pool water sparkling clean and crystal clear.
• Stabilized Chlorine: Contains 56% available chlorine for effective, long-lasting sanitation.
• Usage Directions: Add 3 oz. per 10,000 gallons for routine chlorination; use 21 oz. per 10,000 gallons for super chlorination