What light to use in this space?

Discussion in 'First Time Marijuana Growers' started by nucleo, Jan 4, 2009.

  1. Using 1/2 square meter for this grow and and having about just under 6ft height.
    2 Pots flood and drain where the plant will most likely sit 10" from the ground.

    I am looking for the most convinient strain that fits the above setup. I would also like to know what hps wattage to use. The plan is to get the most yield out of 2 plants, therefore the more the better since there is only that space available. I would like to hang the hps verticaly in between both plants with a fan blowing directly at it. This tent is litteraly next to a window so there is a very good cold breeze coming in (cold air of about -0 C).

    Could someone please tell me what strain and what wattage to go for considering the space and all the other factors?? I would really like to know the heat difference between a 150w, 250w and 1000w. Would a 1000w be x4 hotter than a 250w? Would a 150w have a huge heat difference compared to a 250w?

    Any suggestions?

    Ty.
     
  2. #2 Too-Loaded, Jan 4, 2009
    Last edited by a moderator: Jan 4, 2009
    Lamp Type Wattage Growth Area (SQ.FT.)

    mh 175 9
    250 12
    400 25
    1000 64

    hps 150 9
    250 12
    400 25
    1000 64

    from the Hydrofarm lighting guide...
     
  3. Rule of thumb is 100 watts per plant, could go with a 250 hps but i would rec a 400
    damn near the same cost:D
     
  4. What kind of heat are we talking about in 5sq.ft?
     
  5. 250w would work, so would a 400. Because of your limited height, go indica, they are typically shorter.
     

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