- Joined
- Nov 27, 2020
- Messages
- 3,072
- Reaction score
- 8,933
- Location
- West Jordan
- What state or country do you live in
- Utah
Can anyone help? I’ve gone through the manual and YouTube videos. It appears that my GHL is missing the “calibrate option” after selecting pH. Anyone know if there is a new method of calibrating the pH probes? What am I missing?


