150 / 250 W HPS cooling question

Discussion in 'Growing Marijuana Indoors' started by law_101, Nov 8, 2008.

  1. looking into either a 150/250W HPS light system but was wondering about cooling. My area is about 2.5w-20"D-35"H and currently running CFL. How big CFM fan/blower would you think i would need to pull through my carbon scrubber and yet keep the area cool? Also though about hooking the blower up to a vented hood and then the scrubber on the outside of the box.. what do you all think?
     
  2. I just have a standard 6 inch fan blowing through the plants and onto the bulb/hood.

    Temps stay at around 75-80 and the light is able to stay about 6 inches from the plants.

    -C
     
  3. how big is your grow space? what kind of exhaust CFM fan do you have?
     
  4. You are looking at 12.5 cubic feet of space. To make sure you have enough power to blow air through the filter you need to go a little overkill. A 6" axial fan sucking air from inside your grow space, through the air cooled hood and then out of your space and through your filter should be plenty for a 250 if your ambient air is not too hot.
     

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