the bud sites of my plants are turning redish purple, Its kinda SOG technique so all the site are lookin funky... they are all in straight COCO... and i'm in veg stage of course, about 2 months now. its just at the center and only a tiny bit outward, its not the whole leaf or anything. does any1 know what this is due too? They are under a ton of light... and I have had a little bit of nuteburn but nothing major... Thoughts please...