the Fox Farms nutrients are excellent, I use them a lot ... like ALL nutrients, they are only good if used correctly, dilution and frequency are quite important ... use correctly, get great grows, ignore the directions and over-do it, you'll kill your plants ... nothing wrong with the MG, IF you dilute it correctly, but the FF is a little more specific ... the plant doesn't know whether its getting nitrogen, potassium, phosphates, iron, etc, from one source or another ... :smokin: