Spa Chlorine Concentrate

Controls bacteria & algae in spa water

Natural Chemistry’s Spa Chlorine Concentrate is specifically designed for spas to help control bacteria and algae in spa water.

This product is currently out of stock and unavailable.

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– Specifically designed for spas and hot tubs
– Concentrated formula
– Controls bacteria and algae in spa water



When used as directed, this product is effective as a spa and hot tub water disinfecting agent.
Ensure all spa and hot tub equipment is working properly. Backwash/clean the filter system following manufacturer’s directions. Adjust pH to between 7.2-7.6. When using other products as outlined in the directions for this product, always follow directions on those products.

Maintenance Dose: With pump on, add 1/2 teaspoon of this product per 100 gallons of water (or 5 teaspoons per 1,000 gallons) as an initial treatment. Repeat at 15 to 20 minute intervals until a residual of 3-5 ppm of available chlorine is established as determined by test kit. A test kit must be used regularly to determine the frequency of additional doses of this product needed to maintain the chlorine residual of 3-5 ppm.

Superchlorination: 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.

Reentry: Reentry into treated spas or hot tubs is prohibited above levels of 3 ppm of chlorine due to risk of bodily harm.

Additional information

Available Sizes

2 Lb. Container, 4 Lb. Container