legion- im not to sure about all the different nute defs and excessive amounts but since you say the leaves are curling up like a canoe it sounds like they might be under sum heat stress...
ithg- ohh no nutes yet..huh then i wonder why that one plant is takeing the heat so much worse then the rest of them .. but ur plants do look good.. u figure out a way to get rid of the heat yet?
good luck to both of you guys...
~Notorious