Hi everyone,
since I have been using GHL, I have always had the problem that my salinity probe measured different values inside and outside the tank.
I'm currently sticking to the conductivity (according to the forum it seems that density would be more accurate but let's put this aside for the moment).
I recalibrated my probe one more time accuratelly and did the following test:
- probe inside tank -> 58,2mS
- probe in a plastic glas with some water from the aquarium -> 54,4mS
So there is a difference of approximately 4mS.
I expect the measurement outside the tank to be more or less correct.
Double checked this with Hanna Salinity tester (newly calibrated and verified against Fauna Marin and ATI reference solution).
I thought that this might be maybe related to some leakage current in the tank so I installed the Deltec Titanium grounding probe (and I'm also using a Titanium heater) but this didn't really solve the issue (also checked the grounding on the socket and it looks correct).
I'm running out of ideas what would cause the probe to measure inside the tank a higher conductivity compared to outside the tank?
I really appreciate if you have maybe any other hint or can shed some light on this.
since I have been using GHL, I have always had the problem that my salinity probe measured different values inside and outside the tank.
I'm currently sticking to the conductivity (according to the forum it seems that density would be more accurate but let's put this aside for the moment).
I recalibrated my probe one more time accuratelly and did the following test:
- probe inside tank -> 58,2mS
- probe in a plastic glas with some water from the aquarium -> 54,4mS
So there is a difference of approximately 4mS.
I expect the measurement outside the tank to be more or less correct.
Double checked this with Hanna Salinity tester (newly calibrated and verified against Fauna Marin and ATI reference solution).
I thought that this might be maybe related to some leakage current in the tank so I installed the Deltec Titanium grounding probe (and I'm also using a Titanium heater) but this didn't really solve the issue (also checked the grounding on the socket and it looks correct).
I'm running out of ideas what would cause the probe to measure inside the tank a higher conductivity compared to outside the tank?
I really appreciate if you have maybe any other hint or can shed some light on this.