Originally Posted by
Klondyke
Yes, that's quite surprising for many. When you read comments of experts on swimming pool forums they do not want to hear it. Usually, the pH always going up, so they ask you to lower it by pH minus - whatever all the preparates are named. In fact, all they are based on acidic substances, mostly HCL (Hydrochloric Acid) or H2SO4 (Sulphuric Acid).
Some of them say that already pH 8 is not good for your skin. Why, when sea-water is over 8, water in thermal bad as well, isn't it good for health?