Finally got around to my first water change today. After refilling my tub I checked the water before adding any chemicals. Test strip says pH is low, maybe 6.8 but of course they are hard to read, and TA is low at about 40-50. Then I checked using the 1200v which confirms the TA of 40-50 but gets a HIGH pH of 8 or more. But when I do acid demand it instantly turns orange with a single drop. That doesn't seem to make any sense. Water temp is currently 75F but don't think that should make any difference.
Any suggestions? Should I believe the test strip or the test kit?
And can someone remind me which to adjust first, TA or pH?
Thanks!