Tommy716answered grow question a year ago In my opinion The auto is pretty finicky when it comes to nutes, don’t need much at all. Easy to over feed, calcium and magnesium can be an issue I do t use calmag anymore as you can lock out one with the other,
Looks like a uptake problem to me something in the root zone possibly bad ph, possible cold roots? You could have them locked out with all the nutes ur feedin, get that ppm/ec meter it will be your best friend my 2 cents