First Time Grower

I have 6 plants i got from random 20 a blunts. One has sprouted up and the others are fresh in the ground. I have them under a Plant light from around 6pm-12pm and window box 7am-6pm other times i have them under a black light. I heard that doesnt work but a fellow grower said it can. Any advice or Critique? :-o
 
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