Residential Water Care

Spa Alkalinity Increaser

Raises alkalinity to ideal level

Natural Chemistry’s Spa Alkalinity Increaser is used to raise total alkalinity in spa water. Total alkalinity in spa water should be maintained between 80- 120ppm. As a result of the buffering effect of total alkalinity, pH, bather comfort, water balance, and clarity are more easily maintained.

Spa Alkalinity Increaser™ Image
  • Brings alkalinity level to ideal range
  • Helps maintain a balanced water chemistry
Partner Products
Product Experience
  • Spa pH Increaser™

    • Brings pH level to an ideal range
    • Maintaining spa water pH in recommended range is key to proper water balance

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  • Spa pH Decreaser™

    • Brings pH level to an ideal range

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  • Spa Calcium Hardness Increaser™

    • Brings calcium hardness level to an ideal range
    • Reduces cloudy water caused by low calcium levels

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Spa Alkalinity Increaser Instructions

Directions for use:

Read the entire label before using.

  1. Test spa water for total alkalinity level.
  2. Compare test results to chart below to determine appropriate amount of product necessary to make adjustment.
  3. With spa circulating pump on high speed, add required amount directly into spa water. Continue circulating water a minimum of 20 minutes.

Dosage Chart
All values are in dry ounces

Spa Volume20ppm40ppm80ppm100ppm
200gal1oz2oz4oz5oz
400gal2oz4oz8oz10oz
800gal4oz8oz16oz20oz

NCI threaded safety cap = 1/2oz

NCI large over cap = 4 1/2oz

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