A little update to make here – I am currently thinking that the plant prod chelated micronutrient mix might be a little light in zinc. A more optimal amount is probably about 2x what they provide. I am going to try a split using Peters STEM of about 35g plant prod, 5g STEM.
STEM is a weird micronutrient mix. I’m not sure what its intended purpose is, but it has a bizarre balance of micros. Anyway, it’s zinc is disproportionately high, so it actually works out pretty well in this case.