Why adjust his pH?

Adjusting your pH is one of the first steps in water treatment. Three pH variations can be distinguished:

1) Comfort range = ideal pH between 7.2 and 7.6

2) Depositing water (very calcareous, presence of metals…) between 7,6 and 14

3) Corrosive water between 0 and 7.2

  • What should you do if your pH is very high?

If you are in the presence of depositing water, you must add minus pH to bring the pH back into the “comfort zone”. A dosage table on the product “pH – minus” will give you all the indications to follow according to the volume of the pool.

  • What to do if your pH is very low?

If you are in the presence of corrosive water, you must add pH plus to bring the pH back into the “comfort zone” as well.

  • What more do you need to know?

During the first filling or water change and depending on the water used, the pH can be very high and therefore difficult to lower. It is advisable to add an anti-limestone to the water to help the pH stabilize. Another very important water parameter: the TAC (complete alkalinity titration) helps to stabilise pH variations. These two parameters are interdependent and we will speak in chemistry of “buffering capacity”. At the beginning of the season, it is also important to check the TAC content and correct it if necessary.  Acid rain is often the cause of a drop in the TAC. The TAC should be between 80 and 120 MPP.