Leisure Time Spa 56 Chlorinating Granules that is specifically formulated for spas and hot tubs to effectively sanitize and shocks hot water to keep it clean and clear.
It is a violation of Federal law to use this product in a manner inconsistent with its labeling.
Add 1/2 oz. of this product per 500 gallons of water prior to entering spa. Wait 5 minutes then check chlorine residual. Residual chlorine must read between 2 and 3 ppm. If it does not, additional dosages of material should be added until it does. Once the chlorine residual is established in the 2 to 3 ppm range, the spa or hot tub may be entered.