It might have ihave no idea. I do know that after i mixed to strong of a dose the next day they went to shit. theni flushed. So i am thinking i was stpid and got greedy. I know now that it got over dosed and i think flushing it immediatly was the only savior. Luckly the buds weren't effected jsut the leaves. The leaves are starting to recover, some are going by by, But I think I can recover. I got lucky and look at it everytime I come home and ever few hours. Though untill yesterday I never flushed before, But like i said earlier this is my first grow. Yes mircle grow sucks ass if you try to add anything to it.