hey! got a problem with 1 of my plants-sum of the leaves hav got weird yellow markings over the sections of the leaf which turn brown + dry out in a few days. this is on bout 6 or 7 of the leaves already grown + also about 2 of the new leaves which hav started growing since this started to happen. i thought it mite be a nutrient deficiency but am havin difficulty findin out stuf bout it. any ideas???