I have a 20x40 inground gunite/concrete pool. The pool is in a building with a clear roof. 41,00 gallons, sand filter. Use chlor with 3" tri-chlor tabs, supplement with bleach or cal-hypo 65?

I am typically getting TA readings of around 180 ppm with pH 7.2 - 7.5. CH readings are 200 - 220.

Is there an issue with TA at this level?

My biggest problem this year was killing off a major algae bloom and now trying to get FC/TC levels to stabilize.

Any comments on the TA or help with the FC/TC would be appreciated.