

Highest Quality granular chlorine on the market. 99% Sodium Di-chloro-s-triazinetrione - 56% available stabilized chlorine powder. 3-in-1 Concentrated Pool Sanitzer, Algaecide & Shock treatment For sanitizing or shocking your pool. Granular Powder Chlorine.
Hot tub Dosage: 2oz treats 500 gallons of hot tub / spa water
Pool Dosage: To maintain 1 part per million of free chlorine residual add 2oz per 10,000 gallons of pool water. To shock the pool add 1lbs per 10,000 gallons of pool water.
I have gotten granular chlorine from other stores and found it not to be as effective as this one. Shipping was super fast.