it will work ....but as it was mentioned here before ~it is like feeding a baby junk food~Zandor....if you must use it. use it only after your plant has matured and grown at least it's second node. go with the organic m.g it is a little better... m.g also has a low ph you will need to increase it good luck....after you grow some skanky buds you may want to feed your plants properly. i dont know why i should bother telling you this i guess i feel nice today add some fish emulsion during the veg and some extra p and k during the flower then flush all the shitty slow released nutes out of your soil before you harvest. oh yeah add some perlite or washed rocks....good luck noob dont burn yer house down