Trident Sudden Alk Drop

Markxc

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This morning my apex alarm went off saying Alk is below range. My trident is telling me alk dropped 2 dkh overnight which I highly doubt. I've run another 3 tests with the trident over 3 hours and its given me the same results (so at least its consistent?). I double checked it with my hanna checked and its totally different. Hanna gave me a reading of 8.8 (my hanna has always been 0.5 higher than trident) so its exactly where I expect it to be. Anyone have any idea what could be causing thing? I changed all my trident reagents out a week ago and forgot to calibrate but its been running fine for the week so i cant imagine its just calibration.

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WHAT WATER CHANGE "PERCENTAGE" MAKES IT WORTH DOING?

  • 5% - 10%

    Votes: 73 9.5%
  • 10% - 20%

    Votes: 398 51.8%
  • 20% - 30%

    Votes: 182 23.7%
  • 30% - 40%

    Votes: 25 3.3%
  • 40% - 50%

    Votes: 17 2.2%
  • 50% or more

    Votes: 8 1.0%
  • No water change is worth it

    Votes: 30 3.9%
  • Not sure

    Votes: 13 1.7%
  • Other (please explain in the thread)

    Votes: 23 3.0%
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