Mag deficiency or nutrient lockout? Got a lot of white spots and under the microscope they appear to be part of the leaf itself? Sadly can't share clo

Mg deficiency = interveinal chlorosis with spots. I don't see these symptoms. something is too hot in that soil. organic doesn't mean magic. it is just another fertilizer with it's own characteristics and those characteristics don't correlate much with the marketing term "organic." you can still overfee, you can still provide an out of balance ratio to the plant and the same repercussions will occur, regardless of organic or not. This seems minimal, thankfully, so you can wait and see. MAybe give a little extra irrigation - 10-20% runoff - the next cycle and see how that impacts it ovr the next 10-14 days. All of that assumes it doesn't take a nose dive, of course. As long as you can be patient, do so until you know the exact cause of the damage. If it is limited, isolated, and never happens again, it's no big deal.