Ok got pool numbers today-
Mineral 3000 (salt)
CYA- didn't get
Tot CL .9
Free CL .9
PH 7.8
TA 44
TOT Hardness 157 ( they said I need to add 15 lbs of balance pak- they said low hardness will eventually hurt my liner- more critical in winter they said- I bought nothing)

So is the reason my PH soars over 8 due to low TA- what to do- Borax or what?