Hello all. First, the rundown. Plant is 10 weeks old, just flipped to 12/12. Noticed last week that lower fan leaves have become limp, hanging almost straight down and has affected some of the mid-leaves as well. Also has some rust colored spots (which can't be seen very well in the pics, sry) and some necrosis on the edges on the same leaves (bottom fan). It is possibly nute burn, as I've used a couple different ferts but at VERY low levels (1/4 to 1/2 recommended). Also, is the only plant showing these problems, out of 5 total. Environment is roughly 75 degs with 40% rh. Growing in soil mix, 1/2 low moisture soil, 1/4 peat, 1/4 vermiculite.