Hi guys!! a few months ago my cond probe worked very nice, but some day for some reason the probe descalibrated, so i bought a few days ago the calibration solution 53,000. The calibration were fine, on the apex module screen appears 34.8ppt, so when i put the probe in my tank the reading was 29.5 (i checked with my red sea refractometer) and the reading was 32. I thing my probe is not working well (but its weird that in the solution said almost 35ppt)... a few moments ago i shot down my vectra m1 return pump and the reading of the probe (in the tank) rose from 29.5 to 31.8 when the pump was off, if i turn on my return pump the reading low to 29.5
look at the graphic.
Sin título.png
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