Apex Lite Ph Probe

[jcherepo]

Hi - I have an Apex Lite with Ph probe. I recently hit the 5 year mark and my ph probe does not seem to be accurate. It calibrates correctly, but actual tank reading is between 7.1 and 7.3. I tested the ph with a kit and ph is at 8.3. Is my probe shot? I should add, up until a week ago probe was reading 8.1 to 8.4, then one day it just dropped...
Thanks,
Joe



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[zombie]

If it's 5 years old, almost definately. Single junction usually start showing deterioration after a year and double junctions after 2-3 year.

You might be an engineer if...You have no life and can prove it mathematically.

[jcherepo]

If it's 5 years old, almost definately. Single junction usually start showing deterioration after a year and double junctions after 2-3 year.

You might be an engineer if...You have no life and can prove it mathematically.

Thanks for the input, appreciate it.


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