- Joined
- Mar 5, 2023
- Messages
- 137
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- 26
- Location
- Ohio
- What state or country do you live in
- Ohio
I have a used ION D. I ran the ref sample from GHL and it worked great. Tried to run it again to get an average of the parameters but it keeps saying bad sensor. I tried to run it with tank water and it says bad sensor.
Any thoughts??
Any thoughts??

