[Constant Ph Drift Up]

using Spa Frog with mineral and Bromine, usage level is about 30mins per day with 1-2 people

[Constant Ph Drift Up]

I am having issues with pH control in my tub, my fill water is crazy, pH- >8.0 and TA 220ppm. I had no issues getting the pH down to 7.4 and TA - 60ppm using muriatic acid and aeration. I do have a continuous recirc motor and Ozonator running.

My problem is my pH continuously climbs to 7.8 or higher. I know aeration causes pH climb, but I am not testing till the next morning 10-12hrs after use. I am running out of ideas. I have heard this area has really bad phosphates, but I am not sure what this would do to pH. I just finished a drain and refill 2 days ago, but I can't get the pH to stabilize at a normal level and looking for ideas. Do I need to get a phosphate remover and deal with that issue?