Trying to get my pool ready for the season....water is clear, chlorine levels are holding nicely (no algae)...problem is my other numbers are off. PH is 6.8. I already added borax to raise it with no effect. My TA If off the charts at 170. Looking to have it in the 60-80 range....pool math says to lower PH to 7.0 and aerate pool...being doing that for 24 hours no change.....I know I can use MA but am having trouble figuring out how much....any advice?!? Above ground, 24 ft round pool