I started the day with a pH of about 7.5 and I wanted to bring it down a bit before closing so I added about 10 oz of muriatic acid which should have brought it down to 7.4. About an hour later, I added the closing/treatment dose of algaecide. I am getting ready to drain some water before the pool is winterized and did one last pH test to see if it came down at all. The pH readings are off the charts (above 8.2) - a shade of purple I haven't seen before on the test. Please tell me I should ignore it and that it is skewed by the PolyQuat 60.
P.S. Looking forward to the day when I'll know enough to answer questions instead of always asking them!