My second redox probe is stuck at 128. Probe is maybe 4 months old. Just started a week ago.

Calibrated three separate times and it goes back down to 128.
Doesn't fluctuate at all during the day

I know it's not right because other redox probe I have is reading at 250-300 daily average

Any ideas?

Running latest FW versions


Always at sea;

Dr. Antonio Longo