In The Swim Sodium Di-Chlor Chlorine Granular Pool Shock - 40 Pound Bucket
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Feature
In the Swim's granular chlorine is ideal for use in swimming pools, spas, fountains and water featuresPowerful 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