Problem in the last few weeks!!!!

My buddy has a problem. And its spreading on the affected. He says it starts at the tip and it appears like burnt tips then travels in the veins first turning them burnt yellow and the rest of the leaf follows. Any ideaw? It looks like a P deficiency. But I honestly have no clue.

There are a few dark spots from what I have heard. So its P right? Could it be caused by Cal being off or N to high?

Brown/crispy tips are almost always caused by nutrient burn or pH issues. Crispy or rusting leaves can also be a phosphorus deficiency but if its starting at the tips I would say over-feeding. What type of soil/nutrients are being used?

Coco and House and Garden with all the fixings. It's got the purple spots so its gotta he phosphorus and its mostly up top. The veins are turning first then the whole leaf from tip back. It's not just the edges

Bump.... Anybody?