The value of the PH in the pool is very important, it is correct to keep in the pool a water acidity between 7.2 and 7.4, which will allow the other products to work well.
In fact, chlorine will be able to react correctly only if the PH was previously regulated and stabilized between values 7.2 and 7.4.
You can check and correct the acidity of the water by helping you with the test kit, which will tell you if the PH of your pool is to be raised or lowered, and consequently you can buy the product that is right for you. The product PH MINUS is used to lower the PH while the product PH PLUS serves to raise it.
Once the pH is set, it will hardly fail, if not in case of super-chlorination, heavy rains or important additions of new water into the pool.
We are at your disposal to guide you in your purchases.