The acidity of the medium is of great importance for most chemical processes, and the nature of the course or the result of a chemical reaction often depends on the acidity of the medium. In our case, this is the pH value of the pool water. Therefore, in case of discomfort in the pool water, it is worth checking the indicators of its water - the pH level, the concentration of disinfectants, and in general it is worth knowing the chemical composition of the water with which you fill the pool.