LOL! Only 1 leaf? hehehe... I have over a dozen leaves curled in odd shapes, another 2 dozen with tip burns & side burns (CFL light, not nute), and quite a few pointing in weird directions. I figured it's because of the macguyver lighting. The plants look otherwise healthy & lush, so I shrug it off as a "bad hair day". Bad hair styling don't mean shit to the body underneath. And cosmetic leaf damage don't mean shit to plants.