Using my Taylor 2105, I checked my TA today for the first time in awhile. TC was 8.5 (before adding bleach) and PH was 7.4. Using the 25ml method, I stopped adding the R 0009 at 30 drops. It never turned red. With the 10ml method it registered 50. Never had this happen before. I don't cover the pool during the winter, and adjusting the chlorine normally keeps it clear. Currently it's a little cloudy near the bottom (hence the reason I added bleach).