TA and PH question

[rannrich]

We have had our pool for a month now, so I am still learning...

I am having a small problem with TA and PH, my PH stays at about 7.8 according to my test kit and my TA has dropped to 90.

I took a sample to a pool store on the 15th and they read my TA as 90 but said the my adjusted TA was 80. My PH was 7.6, yet I had done my own test an hour prior and it was 7.8.

Words of wisdom are requested, please. Which do I take care of first, I have been fighting PH but I am thinking that I need raise my TA before I try to lower PH now.

Thanks,
Renee