Ok, that helps a bit. I want you to check out the pics on my recent post. Click them again after they load for the full size...THIS is nute burn, and Iā??ve never seen it like thisā?¦

http://boards.cannabis.com/plant-pro...-pleasure.html

You MAY have nute burn that is just now showing up, and in those areas because the nutrients exchange fastest under the light where photosynthesis takes place, but, your pics look like my plants did when the canopy was 80-90 degrees during light time and I didnā??t water enough.