Instead, I'd just use mycorizhals on transplant. Far more cost effective and efficient, only need to apply it once since the primary colonizer of cannabis roots is Glomus Intrardices, which takes about 6-8 weeks.Right on, you ever use Microbe Brew or Kangaroots? i hear so many good things about Fox Farms.
I don't know if you guys watch growerMD, but he talked about it abit here:
growerMD