Quote Originally Posted by jakester
You used the word "transpiring" like it was a negative thing. Without transpiration the plants would be dead NOW.
The curling is probably a cal/mag def. sign IMO.
Well according to that ultimate growing video, curling up at the very edges of leaves happens when the leaves are too warm and are having to excessively transpire to cool down. I know a plant has to transpire to live. I am talking about that little "lip" on the edge of the leaves, not the curling of the whole leaf.