Hi there S I wouldn't add anything.I would cut down on watering, and,nutes zero!! for a bit.Light distance so long as it is not too close,I think it is(spots on leaves}, is not the problem for now You add Cal Mag you worsen the problem, and if you have done so already,flush her and let her be with nothing for a few days Keep me informed When problems occur, think outside the book, because every problem is unique, no book for that!!...........Start from zero