new to having a pool and trying to get this figured out.... Pool store has my TA at 70 (twice) and I have repeated the TF-100 testing 3x myself and is is much higher - 160-180. I think I'm doing it right, watched the video, etc (though I don't have a speed stir, I think I'm mixing it ok).
Is the TF-100 more accurate than my pool store testing?
Is the TF-100 more accurate than my pool store testing?