I'm wondering if the nutrient you are using is to strong?!.
I once needed to kill a male so I added pure nutrients and it caused rusty brown spots and the foliage went hard.

if you are using nutes then maybe try plain water or a water/epsom salt combo next feed.

Good Luck
cloudsurfer Reviewed by cloudsurfer on . Need some help please.. (pics included) Well I've did alot of searching trying to figure out what could be wrong with one of my plants. I came across so many different things that could be wrong, so I figured I'd ask here. In the pics, you will see 2 plants. The left plant is a week or so older than the plant on the right. The right plant is the one I'm having the problem with. It seems that the lower leaves have some small brown spots. Now my camera won't zoom in close enough to get a clear pic, so I will try to describe the Rating: 5