i used to use miracle grow soil religiously for years, until i got some and used it, and it burned the shit out of my plants, and then, after the fact i noticed they changed the formula from feeding for 90 days to feeding for 6 months. whatever they did they made it to damn hot for cannabis, plus they took some of the pealite out.. luckily i noticed it early enough and repotted them in G&B blue ribbon soil. that stuff is the SHIT.:thumbsup: