I know wrinkled leaves comes from the light being too intense on the leaves. I am, however, confused in my situation because I'm not using enough lights on them (2 45wat CFLs and a 75watt "tube" light for 9 plants at a month old) and there's 6-7 inches between them and the lights. Only a few of them are doing it and its on random leaves. Like, one plant will be fine and the one right next to it will have 2 wrinkled leaves and one a few spots down will have wrinkled new growth and yet the older leaves are just fine. I figured if it was because of the light, there'd be some kind of consistency with it. Advice? PS: sorry for poor quality pics, they're taken with my cell phone.
#1) They need a better light source. #2) They need to be like 2" from the light. (fluoro) #3) They are in need of nutrients. This is why they are pale and stretched at the internodes. Heat stress is giving the leaves that wrinkled appearance.