I’m pulling my hair out right now. I added a second lab grade ph probe to my apex classic. I decided to go ahead and recalibrate both probes off of 7 and 10 solution. Each got their own new bags and I wiped them down between settling.
Both probes read correctly inside the solution bags even post calibration But both have significantly different readings in the tank (tried same location and separate areas). One is at 8.23 (up from what normally would be 8.1 prior to recalibration) and the new probe is at 7.8.
Now here’s the kicker and likely a coincidence. I switched the ports just now on the two probes and now they’re within .02 of each other...what’s happening?
Both probes read correctly inside the solution bags even post calibration But both have significantly different readings in the tank (tried same location and separate areas). One is at 8.23 (up from what normally would be 8.1 prior to recalibration) and the new probe is at 7.8.
Now here’s the kicker and likely a coincidence. I switched the ports just now on the two probes and now they’re within .02 of each other...what’s happening?