Rise in PH Q?

[authentic]

I dont chase Ph,however what is the first thing to look for when there is a unusual rise?

 

[Randy Holmes-Farley Verified Community Expert]

pH measurement error. pH never rises too high (>8.5 or so) without dosing high pH additives or using artificial rock that isn't fully cured.

 

[authentic]

thx Randy,probably time to replace my ph probe,calibrated it a few times in the past year

 

[Randy Holmes-Farley Verified Community Expert]

Wtat do you read now and when did you last calibrate it?

 

[authentic]

last calibrated about a month ago,getting apex alarms that it is 8.54,apex set for over 8.53

 

[Randy Holmes-Farley Verified Community Expert]

I expect that isn't accurate and I'd recalibrate.