I can think of ten to fifteen questions, which is why we ask for you to fill-out the troubleshooting form. The link is in my signature. Cut-n-paste the form here. Answer the questions as best you can.
But like I said before. I don't know your nutes, but if you just transplanted a couple of weeks ago, the Miracle Grow has nutes already in it so you are likely overdosing them. Which formula of MG are you using?
It's not the worst soil I've worked with, but it does take some getting used to. (extra perlite during winter, remembering it already has nutes that will last about 3 to 6 weeks, depending on size of plant...) Others hate it, but aside from what I use now, it's my second choice. Some sativa's argue when MG is used, but they come around in the long run, lol.

Seems I took to long to construct an answer, lol. :smokin: