3rd grow, deformed leafs

I'm on my 3rd grow, the most promising one yet, but 1 of my plants leafs are deforming. It almost liike like frog skin. I'm no photographer and had to use a cell phone camera.

4 Aurora Indica Fem's from Nirvana under 400w HPS from seed about 1 month old all topped after 5th node (only because I have never topped and wanted too). They showed preflowers yesterday all female so I went to 12/12 last night.

the deformed one is on the back right of the room pics, smallest one. But I have a Beast on the left to make up for her.

Anyway, and ideas on the frog skin lookin one?

Either genetics or heat stress. Your plant generally looks pretty healthy. Nothing I would worry about

Your plant is VERY dark green. Your soil is very rich, high in N. That looks like it could be a micro nutrient deficency coming on. When you are too rich in macros you end up being deficient in micro nutrients.
Check out the pics on this page > http://www.ganjaguerrilla.net/index.htm
This is a bad Mg def >