I think that's probably too much misting. Also are you allowing the dirt dry out well? mj isn't one of those plants that deals with constant water well and it could rot your stem, roots and attract gnats. To be honest I don't spray my plants I keep my humidity over 50% ideally I like 60-70% in my veg room. If necessary sometimes I foliage feed but I do that at lights out. Which is another reason I run 18/6 vs 24/0 in my veg closet.