is this a problem?

ok, if it's got Mg it will probably do for now. at that height you need more light. You will need some bloom ferts - higher in P and K - rather than that MG stuff.

I can't really say anything more without pics. YOu could be overfertilizing, but without seeing it i don't know ...

hey hittman, I've found that the best ferts are organtic. Try Foxfarm.com. Organtics are much more forgiving. MJ goes through big changes leading-in as well as during flowering. Leaf loss is common, too much is a sign of a problem leading to less yeild

some pics would be nice to and if u wanna try suttin besides organic go to a walmart and buy MG fert 24-8-16 a perfect nute for marijuana in the veg state