The last photo (planet ganja) looks like someone put water on the leaves and then the light burned them. Is this person getting the leaves wet and then putting them close to the light?

Revised: The Complete Guide To Sick Plants,pH and Pest Troubles - PlanetGanja.com

Here's a good thread to check through..........
Weedhound Reviewed by Weedhound on . hello, leaf problems I saw on some plants... Hello everybody! I "found" those pictures on the internet, and I wonder what could cause this illness. The plants are "probably" growing indoor and they "probably" only get water and some special compost made from warms. I "think" they are growing with 2 Fluo lamps on a 16/8 basis, on soil. Your help will be appreciated. Rating: 5