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sweetolmaryjane
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- 28
Anyone got a recommendation on an accurate PH tester. I have 2 different 25$ digital testers from amazon. I have calibrated them both correctly. Yet when I PH my water both say completely different numbers. If one says 6.25 the other says 7.05. Very frustrating and I don't wanna spend money on another piece of trash. (What's really frustrating is when I put both of them back in the calibration solution they say the correct number. If I put it in the 4.01 they both read the 4.01. but when I put them in diluted water or my rez, they are both out of whack)