P4 conductivity probe read less every day..
http://forum.aquariumcomputer.com/sh...-drifting-down
i read this topic and cross post also here...
GHL staff can you tell me if maybe also conductivity probe can suffer of interferences or miss calibration??
yesterday i re-calibrate again at show 34.5 (like a rifractometer perfect calibrated with FM-reference solution.
today nothing change in tank and sump and again 34.1 ... i bet that this evening i will read under 34 PSU.. why happen?
Same issue with fluctuating salinity
i have a similar issue with the conductivity probe, jumping around by a significant amount. Yes, it may be the effects of micro bubbles, but if that is the case, why is my old P3 probe which is inches away not having the same issue, I got a replacement temperature probe because the old one was reading significantly higher than the P3 probe and a lab grade thermometer but i still have the same issue with the salinity probe. I've calibrated it a number of times now.(if you are wondering why i have both P3 and P4 in same tank it is because the P3 is connected to my old doser and Ive been waiting months now for a doser 2.1)