temp calibration

HI All! TL;DR: Why would an Apex Jr and Apex Pro report pH numbers that are ~.20 different and Temp ~0.8 different? Am I worrying over nothing? Is that variance normal? Here's the long version. I installed a new Apex Jr system in my 90g tank a few days ago, went through the pH calibration...

This is my first Apex so maybe I’m missing something. My apex temp prove is always off by 2 or more degrees. I have three separate temp controllers in my tank plus the temp probe. All three temp controllers show the same temp of 77.8 and 78. However my Apex prob will show 75. I have calibrated...

I just set up my new apex system. I have the hydros currently on my tank. My hydros temp sensor is ready my tank at 79.3 F and my apex is reading 76. I threw one of those generic temp probes in the same spot and it reads 79.9 should I calibrate the apex probe to the hydros probe? Is it normal...

I am confused on the steps in the apex app to calibrate the temp probe, I just set up my new Apex EL and I haven’t calibrated the ph or temp probe. This is what I did to calibrate it. I used my Hanna salinity/temp checker to measure the temperature and then in the apex app when I clicked the...