that looks like it may be mites or something to that effect look at ur soil with a magnifying glass n see if there is mites also what type or fert u using?
yea but now it has gotten worse i dont understand what is goin on with them i noticed i have some mite so i bought some killer for them but it says for herbs but the leave r starting to rinkle and die
Im having the same problem just the very bottom two leaves the ones that dont look like marijuana plant leaves have turned brown is that nitrogen problem still