In The Swim Granular Pool Chlorine - Di-Chlor Pool Shock

In The Swim's granular chlorine is ideal for use in swimming pools, spas, fountains and water features Powerful sanitizing powder that destroys bacteria, breaks down contaminants and kills algae Calcium-Free formula keeps hard-water pools sparkling clean and crystal clear Contains premium-quality 56% available stabilized chlorine 99% Sodium Dichloro-S-Triazinetrione Dihydrate