I finally updated to the latest AOS today, around 10:30 am. Starting around 1:40 PM, my pH probe has been changing dramatically and constantly, bouncing above and below the alarm set point of 7.8. I've gotten at least 40 notifications, sometimes 10 seconds apart, from about 1:40 until about 4:40. At that point, I decided to recalibrate the probe. Did that, but still getting constant notifications (up to a total of 62 for the day so far). I remember last time I calibrated the probe, it took several days for it to settle down, but it was at least within range so I wasn't getting constant notifications.
My salifert test currently reads about 8.1 but the ApexEL says 7.75. When I calibrated, I did manual calibration and it seemed to be reading high (settled at 724 and 1031). I suppose I thought, if anything, it would read high at that point.
Suggestions? I purchased the unit about 7 months ago, used. The previous owner said it was only about 6 months old. So, if that was correct, the probe is only about 13 or so months old. It wouldn't need to be replaced already, would it (it was stored properly when I got it and the seller seemed to really take good care of their equipment)? Other ideas? Just now, the pH bounced down to 7.5 and then back up again to 7.82.
My salifert test currently reads about 8.1 but the ApexEL says 7.75. When I calibrated, I did manual calibration and it seemed to be reading high (settled at 724 and 1031). I suppose I thought, if anything, it would read high at that point.
Suggestions? I purchased the unit about 7 months ago, used. The previous owner said it was only about 6 months old. So, if that was correct, the probe is only about 13 or so months old. It wouldn't need to be replaced already, would it (it was stored properly when I got it and the seller seemed to really take good care of their equipment)? Other ideas? Just now, the pH bounced down to 7.5 and then back up again to 7.82.
