The ideal acidity of pool water is so important for two reasons: the optimum effect of water treatment products and the well-being of bather’s skin.

The pH is a unit of water acidity. The pH value equal 7 is neutral, pH below 7 points to acid reaction, pH above 7 to alkaline one.

A human teardrop shows the pH value of 7.4 what is also the ideal pH value for pool water. Unfortunately, chlorine is the most effective at the value of 7.0 and below. Thus, the ideal compromise would be the pH between 7.0 and 7.4. It ensures the greatest bathers’ comfort and the effectiveness of pool water chemicals.

To achieve the water of optimum pH value a few steps should be taken. First, water should be checked with a tester. After reading the results use appropriate chemicals to lower or raise the pH value. Test water once again after a few hours to check whether chemicals were used in sufficient amounts. In Europe chlorine is most popularly used chemical to decrease pH level (pH Minus).

Please note that at pH values above 7.7 it is hard for chlorine to decompose. Tests will show then that chlorine amount is sufficient and you will feel its characteristic smell but its activity will be limited what may result in water of green colour. In such a case the pH should be lowered to 7.0 and shock chlorine treatment be performed (with Chlorifix).