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cant cool the grow box???

Discussion in 'Newbie Central' started by blonddie07, Jan 12, 2008.


    blonddie07 Well-Known Member

    Hey guys .. Ill make this short . I'm trying to cool my 6foot tall 32 inch wide and 16inch deep grow box. I'm using 600w hps. I made a cool tube with a 6inch inline fan and a glass cylinder pulling passed the light bulb. I have air blowing in with a 4 inch fan from the outside so fresh air gets in and a 4 inch exhaust at the top of the side of the box.... What else can I do.?? Buy a real cool tube?
    . The temps get to 90 somtimes....

    pastafarian Well-Known Member

    anyway to add an inlet fan to the room?

    blonddie07 Well-Known Member

    Inlet as in a fan blowing air in the box? I got one. Its a fan ducted to the outside air pulling fresh air in.. Also the fan pulling the heat from the lamp is exhausted also tothe outside.. Not outside of the box but both outside of the room as well

    LoudBlunts Well-Known Member

    your fan probably isnt strong enough... what is the cfm.

    should be blowing air on/over the tube

    Spittn4cash Well-Known Member

    u need to have something sucking air outta the room. squirrel cage fans are great for exhaust. sucks plenty of heat out and connect a carbon filter to absorb the odor.


    or try this


    blonddie07 Well-Known Member

    hmm.. my fan is 120CFM sucking air out of the grow box and into the attic..

    xbravoz Well-Known Member

    From what I've read about cooling a room, Its all about the CFM rating of your fan...the higher the number, the more air it pushes. A 250 cfm fan would probably be better for you

    email468 Well-Known Member

    i use a 440 CFM to exhaust my box (24" x 46" x 75") and a 170 CFM to exhaust my air-cooled 1000w light to keep temps reasonable.
    Nick E.S.P

    Nick E.S.P Member

    im growing in my attic so i have the same problem im growing simply in a cardboard box and ideas?

    reuben85 Member

    i have been having some what of the same problem,but im useing cfls an my temps sometimes hit 93 or so.i add 1 more fan today an i have been putting frozen 2 liter bottles in my box too.if the extra fan dont work with in the next day or so,i was thinking about adding 1 gallon milk jugs.

    cmate Member

    anyone considered buying one of those electric coolers - thermo electric - and take it apart and adapt it to the grow box? I am sure it would not cool a large area, but maybe it would work if you only needed 10 deg. drop ??

    you could wire it up to a thermostat that would turn it on/off...

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