Ive used MG on my out door grows works well, some strains take to it better than others. My suggestion when using MG or any other nuts. is always start off with light feeding 1/4-1/2 recommended strength. Watch your plants, if they look green healthy and happy then stick with that amount of feeding. If you start to see the tips burn skip a feeding and back off on the amount. If you dont have access to smart pots and thats what you want to grow in, do a search, I saw a few days ago on how to build your own smart pots. I think you can pick up the materials at any lowes, home depot, or any place that has a garden center.