Just opening my pool and balancing water. Water is clear. Tested water: TA 21, PH 7.3, FCU 1.83, TC 1.95, CH 98, CA 47. Added baking soda to first get my TA up. TA rose to 66 but PH went to 8. I still need to get my TA up a little but PH will rise if I add more baking soda. Both will go down if I add acid. How can I get my TA up and lower PH? Historically, my PH wants to stay high.