Hello Zipcode,
I don't think you need more support, KarenO is a much more experienced authority on that, but I fully agree with you. Phosphorus in the first picture and magnesium in the other. As long as the plants are doing well overall, nothing much to worry about. Maybe something with chelated magnesium and increased content of P could help get rid of that. Myself, I'd do nothing.
Milan HP
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