Age: 7 weeks from sprouting, Week 2 of flowering
Medium: Fox Farms Happy Frog (transplanted from Miracle Gro soil at 2 weeks. A very small amount of the MG soil was left on the roots when transplanted)
Lighting: 6x 26w 2700k CFL's & 2x 26w 5000k CFL's on 12/12
Water: Filtered through dispenser in fridge door, sat out for a couple of days
Nutes: NONE yet but I have the GH Flora series unopened
Could this be a magnesium deficiency? I'm a new grower and this is my first full grow. Itd not on all the leaves, just a couple of the lower leaves on each plant. Sorry for the crappy pics, I don't have a good camera, just my iPhone.
Below is a video taken last week to show the full scale of the plants.
[video=youtube;CNFNDWQqiQ4]http://www.youtube.com/watch?v=CNFNDWQqiQ4[/video]