I just purchased a house with a pool 10+yrs old.

Anyway My chemical levels are. Cl=2.5 , Alkalinity 165 , PH 7.5 give or take, after adding 2 quarts of acid over 2 days. I want to try the BBB method except my friend who is a pool guy came over and said HEY Pool RX is ticket and gave me one, so stupid me put it in.

So I am looking for some advice on what to do.