AsNoriuanswered grow question 10 months ago nitrogen and calcium
but if soil reminds just overwatering and pots (rich in food) ph swing.
triple check ph in and water only when pots are light if its soil
in coco - only ph, plant cant uptake, but you feed too heavy too.
some plant are light feeders.
direct wind or coldest corner can play a bit and look similar, but i would bet on my theory