My TA was at 160ppm and PH at 7.8 (slightly above 7.8).
I added 32 oz Muriatic acid and checked in the morning after running pump overnight.
PH has reduced to 7.6 or 7.7 but TA is still 160ppm.
I performed the tests twice and I also use speedstir.
I tried with TF-100 and 2006 test kit. Same result. My drop size is good and I hold the bottle upside down completely (was doing this incorrectly in the initial days where it was slightly slanted)
Am I missing something.