Hey guys, i have just started to notice this on the big fan leaves. Any idea as to what's wrong, thanks!

setup-
400W HPS, promix soil, foxfarm nutrients, lights are 18inch from canopy, temps have been 70-80F, humidity 30-40% (a little on the dry side)

One thing I worry about is pH since I have only been using tap water and haven't been adding any PH down (did a great grow without adjusting PH so I've been lazy with this one in that respect). Oh yeah, I'm growing feminized "ICE" from femaleseeds.
bonghitter Reviewed by bonghitter on . shiverled up leaves Hey guys, i have just started to notice this on the big fan leaves. Any idea as to what's wrong, thanks! setup- 400W HPS, promix soil, foxfarm nutrients, lights are 18inch from canopy, temps have been 70-80F, humidity 30-40% (a little on the dry side) One thing I worry about is pH since I have only been using tap water and haven't been adding any PH down (did a great grow without adjusting PH so I've been lazy with this one in that respect). Oh yeah, I'm growing feminized "ICE" from Rating: 5