The water balance depends on 3 parameters:

• The potential Hydrogen (pH),
• The hardness or Total Hardness (TH – calcium and magnesium concentration),
• The alkalinity known as TAC (concentration of bicarbonates and carbonates dissolved in water). 

Water temperature also plays a role in the water balance, but to a lesser extent.

So if the pH is difficult to stabilize, your TAC is probably incorrect. It must be between 80 mg/l and 140 mg/l (8° f and 14° f)*.

The TAC or Complete Alcalimetric Title, measures the content of mineral salts which stabilise the pH in the water.

In fact, if it is maintained between 80 to 140 mg/l, this limits variations in pH and therefore ensures the effectiveness of the products.

*°f = French degrees

Checking the TAC is recommended at the beginning of each season.

• Your TAC is too low: Increase it to the value of 100 mg/l with hth® ALKANAL. Then use hth®  pH PLUS POWDER to increase the pH to between 7.0 and 7.4 (in front of the discharge nozzles, filtration operating).  

• Your TAC is too high:  Lower the pH to 7.0 with hth®  pH MINUS MICRO-BALLS (in front of the discharge nozzles, filtration operating) and maintain this level for several days.

   Did you know?

The ideal pH is between 7.0 and 7.4.

7.4 is also the pH of tears, blood, and mucous membranes produced by the human body.