No, just get a real fertilizer... too easy to overdose...

I do NOT recommend 20-20-20 for veg! (however nice work on that little Christmas tree you've got going there!!! she's a pretty girl!) That is not a good balance for cannabis... but it's better than urine...

When you really learn your shit, then start playing with alternate sources of nutirents... until then. stick with something like POwer Plant, PureBlend Pro, or Foxfarms... the basics...