what the hell?

i've been growing 4 plants of the same strain (california orange) two in miracle gro potting soil and two in miracle gro potting soil moisture control. they're nearing the 2 week mark. the two that were grown in the regular potting soil look perfectly fine, but the two in the moisture control look really odd. the leaves are abnormally wide and the veins in the leaf look mutated. i don't know how to really explain this. maybe i'll post some pics later tonight if i get my camera charged. anyway, i let the moisture control go bone try until i water again. i started doing this after i noticed the weird vein pattern. ever since i started waiting until really dry to water, the first two leaves on both plants have gotten significantly wider. what the hell is going on?

other than the leaves looking really weird, the two grown in moisture control seem to be doing healthy, but what the hell do i know? i'm the one posting in the newbie section.