06-28-2016, 12:39 AM
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Moderator
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Join Date: Mar 2004
Location: Saskatoon, SK.
Posts: 11,268
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Quote:
Originally Posted by gregzz4
I agree with the other replies
Have you checked the apex and seneye in new 7 and 10 fluids, after calibration?
Also, stray current and electrical fields can skew pH probe readings. Try putting some tank water in a glass and test that with the probes, but 1 at a time.
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Good advice. 
__________________
~ Mindy
SPS fanatic.
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