By Natural Chemistry



Model # 04104

Alternate Part #'s NAT04104, NC04104EACH

Product Description

Natural Chemistry Alkalinity Increaser 2lbs. - Maintain balanced water chemistry

Spa Alkalinity Increaser helps maintain balanced water chemistry by buffering pH and improving bather comfort. It is part of the Adjust group of products used in the Spa EASE program.


  • Brings alkalinity level up to ideal range
  • Reduces skin and eye irritation
  • Protects spa surfaces and equipment
  • Easy to dose & measure cap


  • All values are in dry ounces
    Spa Volume  20ppm   40ppm 80ppm   100ppm
     200gal 1oz  2oz   4oz  5oz
     400gal  2oz  4oz  8oz  10oz
     800gal  4oz  8oz  16oz  20oz
    NCI threaded safety cap= 1/2oz NCI large over cap= 4 1/2oz

How to Apply:

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

Features & Benefits:

  • Brings alkalinity level to ideal range
  • Helps maintain a balanced water chemistry

For our complete line of Natural Chemistry Pool & Spa Chemicals


?     Asked on 11/30/2012by Guest

What is Total Alkalinity?

A  Answered on 11/30/2012 by InyoPools Product Specialist Patrick P.

Total Alkalinity is a measure of the "buffering capacity" of water, or its ability to resist a change in pH. Low Total Alkalinity can cause: etching of pool plaster, corrosion of metal parts, staining of the pool surfaces, etc. High Total Alkalinity can cause cloudy water, burning of eyes, chlorine being ineffective, etc.

?     Asked on 11/30/2012by Guest

What is the ideal range for Alkalinity and how often should I test it.

A  Answered on 11/30/2012 by InyoPools Product Specialist Patrick P.

The ideal range for Alkalinity is 80-120 ppm. The swimming pool should be tested at least 1-2 times per week.


Review Summary

 (Average 0  out of 5 stars)
0 Rating
5 star:
4 star:
3 star:
2 star:
1 star: