ive been usin MG soil since i started growing.. andd have not had any problem with it at all.. and all my grows have been great.. got 3+ ounces dry off each WW plant... 2 1/2 from my super skunk... 2 1/2 from my blue venom.. lookin at 3-4 off my full moon that will be done in 3-4 more weeks.. click on my link.. or check out my other grows and see for myselfim not trying 2 hate or put down in any way BUT if the bud finishes in three months and the mg has 3 months of ferts in it it gonna look like the 4th of july when u throw fire 2 it not to mention the high likelihood of ph problems