Hello,
Would like some help troubleshooting my KH director. I calibrated the KH Director pH probe last week and now my readings are anywhere from 5.3 to 6.9 (test kits results are 7.7-8.1 dKH). Prior to the calibration, the KHD was working fine and was consistent with my test kits (Salifert and Hanna). I have recalibrated the probe two more times and calibrated my doser pumps and still no luck getting the readings. I have no bubbles in any of my lines. Any help is appreciated.