Hi all, my first post here. Thanks for this wonderful forum Basic info: -Soil -Good mix with perlite -Outdoors 12h + Indoors 6h, 2 x 40W Cfl -Dhaze (Northern Lights x Haze) - 3 weeks - Watering every 2 - 3 days with bottled water pH adjusted. - No nuts added yet. - No bugs. - Temperatures are between 20 and 26 C I just saw this yesterday and of course I don't have any idea what it could be. I have two other (different strains) plants growing in the same place, same soil and watering and they are absolutely fine. I think I will let pictures do the talking The last picture is taken from the bottom of the leaf. Thanks for all your help.