400w hps lite height?

Discussion in 'Growing Marijuana Indoors' started by Dangerdog, Jun 10, 2011.

  1. How far off the tops of my plants should I keep the lite. They are really bushy and about 12" high.
     
  2. Open your hand fully and put it under the light. I go by that about 10inches.
     
  3. keep them around 12"-18" away from the plant depending on tempertures
     

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