What could be causing this?

Well its a little over 2 weeks in veg and this ASD is blotchy and dont know why? Is it N deficient already ? I've heard ASD is a N hungry bitch all through the grow but dont really know whats going on so any suggestions would help ty.

Medium : FFOF ammendended wth lime and bone meal
Lights :600 watt mh
Strain: Amherst Sour Diesel (HSO)
Nutes: None yet due to being in FFOF
PH at water: 6.5 and Run-off as is when it was put in

i dont think its going to be to much of a problem was just looking back at my grow journals and i had 2 Blue dreams from same company do the same things dont know if its genetics or what but they stabled out of this problem.

Could be very slight mg def. A pinch of epsom salt wouldn't hurt. (1/16th to 1/8 tsp/gal). But, if you've seen it before and it didn't get worse, it's probably not worth messing with.

i was thinking the same thing but like i said it isnt to bad so just ride her out but gonna try a lil epsom if it gets worse.

Looks like a happy plant, nice work! I think you're right it's not an issue. It shows you care about your plants when you sound like a parent with a newborn baby at the pediatrician.

thanx caherb i try i dont love em to death but i do like to know how to treat em before it gets out of control.