please help to save my plant

hi, my plants were doing fine until this last week. im thinking when i changed the soil. i re planted them last night into there end pots in john innes no 3 mixed with perlite got two 200w cfl bulbs one veg one flower and fan running in there and they have gone from healthy to leaves curling and going yellow (see pics) if someone could point out the problem i would be greatful as i dont want to lose them. they are auto flower lemon o matic (doing the best) white russian, big bang auto, il divalo and low ryder. just over 3 weeks old.

thanks

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