Just one further note: unless you have a concrete pool, the ONLY reason TA matters is if (a) it's TOO high, or (b) if your pH is bouncing around or changes too rapidly to keep it under control.

If you have a vinyl or fiberglass pool, and are NOT having problems controlling your pH -- it's normal to have to add something up to 1 - 2x per week to keep the pH in range -- then do NOT worry about your TA!