how close to the plants can i hang a 400 watt hps ?

Discussion in 'Lighting' started by striker1, Oct 18, 2014.

  1. i just recently aquired a 400 watt hps set up, my question is how close to the plants can i hang it?

  2. Thanks Corn Man, Also i
    my grow room is 36" by 48" with a 12 'ceiling,is a 4oo watt suffient for this area?
  3. Here check out this chart
    Light Chart.jpg
  4. Honestly I've grown with hps before but never really cared about distance as much but I've been on the lookout for posts about this same exact question. I think experimenting yourself within a "range" of numbers that you've found online is a great way to start as well as sticking your hand right above your canopy.

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