I'm new here. Hi to everyone and Thanks for having me as a member.
This is the 1st time I have ever had a problem with Alkalinity being too high.
Normally it will get to low and for that I added Baking Soda and it would go up.
Here are my test Results.

FC 5
PH 7.2
TA 140
CH 300
CYA 35

Taylor K -2005 Test Kit

20 x 40 Gunite Inground Pool
29000 Gallons

I have lowered PH and Aerated with a Fountain but the Alkalinity will not come down.
Any help will be appreciated.