based on what's been said, i think its feeding. Like, in that particular container, there is a slightly higher concentration of N and Mg than in the others.. To me they look very well fed, like a hair away from "the perfect greenhouse burn" stage of feeding. I think they'll grow out of it in a week or so.. If u got space, fuck it and run them anyway. if youre limited on space and they dont get normal in a week or so, then kill them. no sense in wasteing time on plants that dont want to get with the program.