Shock (Chlorine Pool Shock a.k.a Calcium Hypochlorite) (BUY ON AMAZON) naturally raise the pH level of your swimming pool water. On the other hand, Chlorine free shock has a neutral pH, and will not affect any of your pool chemical levels.
Does Chlorine affect pH?
Using liquid chlorine increases water PH level. Liquid choline levels cannot raise PH but when added to your pool, liquid chlorine (which has a PH of 13) makes HOCI (hypochlorous acid – the killing form of chlorine) and NaOH (sodium hydroxide), which raises pH.
Does Shock Raise Ph?
Shock is chlorine, in a high dose, meant to shock your pool and raise the chlorine level quickly. Chlorine tabs (placed in a floater, chlorinator, or skimmer basket) maintain a chlorine residual in the water. You do need to use both tabs and shock.
ALSO SEE: Can You Leave An Intex Pool Up All Winter?
Can You Add Shock and Chlorine at The Same Time?
Well, it depends. If you will be adding Stain & Scale chemicals a day before or several days after, then you can shock a pool and chlorine at the same time. If not, do not do it.