GHL low Orp values

[Silverdot1211]

recieved my GHL like a week or 2 ago and finally got things calibrated. Only thing I am concerned with is my ORP is low. I tried to calibrate twice and the same values came back from my tank. If this is correct then do I have an issue with my levels? If so how do I fix it?

Flip side of the equation what's the chance the probe is bad? Any way to verify its working correctly with out buying another?

 

[Silverdot1211]

Forgot to add picture

 

[Vinny@GHLUSA Verified Sponsor]

Is the tank new?
These redox probes do have a "break-in period" and can take a few days to stabilize and show more reasonable values.

You can test the probe by dipping it in the 220mV fluid for a few minutes and seeing what result you get. If it's within +/- 10mV, the probe is OK. If not, calibrate it following these steps.
https://www.aquariumcomputer.com/knowledge-base/how-to-calibrate-the-redox-probe/
If you need further assistance, feel free to open up a support ticket for 1-on-1 help. Link is in my signature.

 

[Silverdot1211]

@Vinny@GHLUSA so I took the probe out rinsed it with rodi then put it in the calibration fluid. Numbers came back like 210mv. So it's close enough. I will give it a few days to settle in thanks again