I just hooked up my new ph module and wonder if I calibrated the probe correctly. The apex display gives the values of 7 and 10 ph for calibrating. Does it matter that my solutions say 7.01 and 10.01? Also, does the temp of the calibration solution matter that much? The temp on mine was probably 74-75. It says on the packet that the std is 78 degrees. I’m wondering because the pH the apex is showing seems low. It’s 7.8 while my old standalone ph monitor reads 8.3. An API ph test read about 8.0. Should I calibrate it again? Any help is appreciated!!