Distance Between 600w hps and canopy

Discussion in 'Growing Marijuana Indoors' started by rackem122333, Mar 24, 2016.

  1. first grow, got my scrog screen almost filled, just wondering what the 'sweet spot' would be, how much space in between canopy and my 600w hps light. screen is about 4 feet by 4 feet and heat is not an issue as i have a heft fan sucking over the bulb. thanks for any info advice!
     
  2. 18" or so
     
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