ryno920 Posted July 21, 2022 Share Posted July 21, 2022 I had my probe out of the water for about half an hour while doing some rearranging. After I put it back in the tank the ph has been reading 6.75 +/- .02. I tried the automatic calibration and calibrating the low end (7.0) worked, but the high end (10.0) would settle, but wouldn't read within range. I tried manual calibration a few times, including unplugging, running the manual calibration, plugging back in, and calibrating again. Every time I calibrated both solutions (7.0 and 10.0) would immediately settle at 675 and would never read anything else. I found an old post where someone had issues with probes flatlining and Neptune suggested the brain needed replacing. Does anyone know of any other tricks to get my probe working, is it a sign that the probe needs replacing, or will I need to pony up for a new base unit? Quote Link to comment
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