Stoner Forums - A Marijuana & 420 Friendly Community

I posted a pic check it out..these brownish spots appeared on the 1st set of true leaves and seems to spread throughout the entire leaf..starting at the tip.
then after the fan leaves developed above that set it spread to that set at the tips also.for some reason this exact looking problem has been haunting me for a while now in the veg stage.right now this is the only seedling out of my group that has this but the past grows ive had this same problem on many of my seedlings that disprupts the veg.

i start the seeds in cups of foxfarm soil then transplant into a coco pot at 2 weeks old.these spots were even developing in the cup of soil.

Its not nute burn bc they havent gotten fed yet and the ph of the water has ranged from 6.3 to 7.any idea what would cause this??i dont know how it could be a deficiency since the cup of soil should have plenty of nutes for the seedling for atleast 2 weeks.its def not light burn either.

Attached Thumbnails