looks like you have a half decent grow tent going there, I'm a noob still (in my mind at least) so take my advice or not, the advice I give is mostly what has been given to me here. Keep that MG down to a bare minimum and transplant into a lighter non treated organic soil mix like Fox Farms Ocean forest potting soil. No need for nutes, its got all kinds of great material in it, bat guano, worm castings, etc just transplant (after you have a good root ball) and bury that root ball up to the little bitty leaves (the ones that don't have the serrated edges) and spray lightly and mist the leaves a bit (plain ph'd water). If they've been under lights 24/7 I would consider leaving them as such for at least a day or so till you are out of the woods on transplant shock. Me myself, I sprinkled some highly diluted Fox farms Big bloom on mine after transplanting to help avoid shock at the advice of another member at RIU. BTW, this is year 3 for me, still learning, check out my set up if you like, not as sophisticated as many here but hey, it works for me. I am just waiting on a desk fan and mylar to finish it off. Good luck on your grow and keep on toking!