Sooooooo.
This new meter I got is always stored in 4.0 solution. I occasionally check that it goes back to 4, and it does. I've been having problems, and pulling my hair out because I could not for the life of me figure the shit out. Anyways the meter only went to 4.1 so I figured I'd calibrate the meter. I measured my solution before because I figured it would change. It was 5.7
Anyways, I calibrated the meter, re-checked the PH and it was 5.2. Recalibrated it, and 5.2 again. Apparently my meter was reading fine on the low end, but was off higher up.
Let's hope for some healing. This grow has been a rough one from day one.
Send me some Karma Fam!