1. Test spa water for total alkalinity level.
2. Compare test results to chart on bottle to determine appropriate amount of Natural Chemistry Spa Alkalinity Increaser necessary to make adjustment.
3. With spa circulation pump on high speed add required amount directly into spa water. Continue circulating water for a minimum of 20 minutes.
To Raise Alkalinity 20 ppm
200 gallon spas - 1 oz
400 gallon spas - 2 oz>/p>
800 gallon spas - 4 oz
To Raise Alkalinity 40 ppm
200 gallon spas - 2 oz
400 gallon spas - 4 oz
800 gallon spas - 8 oz
To Raise Alkalinity 80 ppm
200 gallon spas - 4 oz
400 gallon spas - 8 oz
800 gallon spas - 16 oz
To Raise Alkalinity 100 ppm
200 gallon spas - 5 oz
400 gallon spas - 10 oz
800 gallon spas - 20 oz
Sodium Hydrogen Carbonate 100%
This product is intended for use in spas and hot tubs with low alkalinity, which can destabilize pH and cause corrosion damage to plumbing, surfaces and equipment.