yea dude the leaves are crispy too, i think i am going to chop sunday night that will be day 7 or maybe if im to tired i will chop monday morning
i found this online , maybe over fertilization, in the beginning i fertilized them pretty high around 900ppm
and then i backed off and it was 400ppm or so entire grow
Too much marijuana fertilizer
The most common cause of marijuana leaf cupping aka leaf margin rolling, leaf margin burn, and leaf tip curl/burn is overzealous use of marijuana plant food. In relationship to factors such as marijuana plant vigor and rate of growth. Leaf burn is often the very first sign of too much marijuana fertilizer.
A hard, crispy feel to the marijuana leaf frequently occurs as well, as opposed to a soft and cool feel of a happy pot leaf. Back off on the amount and/or frequency of using marijuana fertilizer. Too much marijuana fertilizer can also burn the roots, especially the sensitive root tips, which then creates another set of problems. Note - as soil dries, the concentration of the remaining salts rises further exacerbating the problem.