Concentrated Chlorinating Sanitizer and Disinfectant.
Maintenance Doses Initial Treatment: WITH PUMP ON, Use 1/2 teaspoon of this product per 100 gallons of water (or 5 teaspoons per 1,000 gallons). Repeat at 15-20 minute intervals until a residual of 3 to 5 ppm of available chlorine is is established as determined by a test kit.
Superchlorination WITH PUMP ON, Use one teaspoon of this product per 100 gallons of water (or 1/4 cup per 1,000 gallons). Superchlorination may be needed on a nightly basis in a heavily used spa or as infrequently as once a week in a moderately used spa.