Cox Pools Blog

 

Balanced Pool Water

 

April 17, 2015

 

 

Proper, balanced water chemistry in your pool or spa is vital to healthy, beautiful water and a long life of your plaster and equipment. There are many different opinions from the pool and spa industry "experts" on how to maintain perfect water. In our blog, we are going to make it easy for you.

 

The Components and Ideal Parameters for Balanced Water

 

Balanced Water Diagrams are listed below. For easier access please click here.

 

 

Suggested NSPI Standards - Swimming Pools

 

Minimum Ideal Maximum
Free Chlorine, ppm 1 1.0-3.0 3
Combined Chlorine, ppm None None 0.2
Bromine, ppm 2 2.0-4.0 4.0
pH 7.2 7.4-7.6 7.8
Total Alkalinity 60 80-120* 180
Total Dissolved Solics (TDS), ppm 300 1,000- 2,000   3,000
Calcium Hardness, ppm 150 200-400 500- 1,000
Cyanuric Acid, ppm 10 30-50 150**

* 80-100 for Liquid Chlorine, Cal-Hypo and Lithium Hypo; 100-120 for gas chlorine, dichlor, trichlor and bromine compounds. 

** Except where limited by Health Dept. requirements, often to 100 ppm.

Suggested NSPI Standards - Spas

 

Minimum Ideal Maximum
Free Chlorine, ppm 1 1.0-3.0 10
Combined Chlorine, ppm None None 0.2
Bromine, ppm 2 2.0-4.0 10.0
pH 7.2 7.4-7.6 7.8
Total Alkalinity 60 80-120* 180
Total Dissolved Solics (TDS), ppm 300 1,000- 2,000   3,000
Calcium Hardness, ppm 150 200-400 500- 1,000
Cyanuric Acid, ppm 10 30-50 150**

* 80-100 for Liquid Chlorine, Cal-Hypo and Lithium Hypo; 100-120 for gas chlorine, dichlor, trichlor and bromine compounds. 

** Except where limited by Health Dept. requirements, often to 100 ppm.

 

 

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