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Thread: Help: Salt reading is going sky high

  1. #1
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    Help: Salt reading is going sky high

    Hello.

    Hope somone one can tell me if I have a bad probe, or I am doing something wrong. Salt reading with refractometer is 1.024. Tank is stable. Yet every time I calibrate the probe, the reading keeps going higher and higher. Every spike down you see in graph, it is a new calibration with fresh solution, yet the reading never stabilizes. I use som compensation to bring it lower, but now it is out of control.
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  2. #2
    Frequent Contributor iamchadster's Avatar
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    What solution are you using to calibrate your probe? Is this a new probe/new Apex?
    Chad

  3. #3
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    New probe, new Apex, Neptune Solution, 53,000 used one time only.

  4. #4
    Frequent Contributor zombie's Avatar
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    While it usually only takes a day or two, I have seen probes take up to a week to level out their readings before it's actually ready for the first calibration. You also need to be obsessive about ensuring the packet temp matches tank temp and that the probe is bubble free when you calibrate.

    Sent from my SM-G965U using Tapatalk

  5. #5
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    Thank you everyone. I think the packet temperature was the trick. Least night, I kept it in a sump for 1 hour before calibration, now salinity has been steady and within range for about 14 hours
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