what kind of lights are you using and how close are they. that brown spot looks to me like a burnWell the plant is about 5 weeks old still in veg (going for a monster bush) and she has about 3 or 4 of these leaves they are twisted like they grew at a 90 degree angle the brown spots still feel like regular leaves, any help is appreciated!!!
Hmph, you can try cutting on the nutes a bit because it can be in fact nute burn, how much are you using?No bugs, Been using nutes since day 1 (hydro), one strange thing is 2 of the other leaves with the problem have the brown spotted in a few places but always has 1 big brown spot somewhere on the leaf
Your problem is the foil reflecting hot spots onto your leaves. Scratch the foil and they should go away eventually.