GHL ph and ORP probe wrong reagings ?

[Yanir34]

Hello everyone !
I connected my new GHL Profilux 4 to my tank.
The tank started cycle 6 days ago , the P4 was connected 2 days ago.
Something with Ph and ORP results doesn't make any sense:
The ph is steady 8.5 day and night
the ORP is very low , at 100 mv.
I have calibrated the probes , twice.
any advice ?

 

[wculver]

What happens if you put the pH probe in DI water? Definitely should not be seeing a flat reading day and night.

Hello everyone !
I connected my new GHL Profilux 4 to my tank.
The tank started cycle 6 days ago , the P4 was connected 2 days ago.
Something with Ph and ORP results doesn't make any sense:
The ph is steady 8.5 day and night
the ORP is very low , at 100 mv.
I have calibrated the probes , twice.
any advice ?

 

[Yanir34]

I know ..because of that it's so strange. I will try it

 

[nvcheeko]

Is that correct for the Temp Probe?