AK 47 help. Disease?

I just wanted an opinion on this.. the black on the leaves isn't a shadow and both the leaves were curled up today but under the light one had started to come right, could this be a disease? Or could it be the light? Any help is appreciated.
Thanks

its a baby stop momying it lol let her grow before you worie too much it could be from the shell of the seed or ought she'll be right m8 no wookin furies

Loos good, Im worried about your dirt though -- no perilite or anythign in it, id be afraid of overwatering ... your dirt looks liek it will turn to clay if watered alot.

the soil's alright. I've used it before found it works well here. Haha i'll try not to mommy it but it's a bit hard if you know what I mean. Anyway thanks for the help.