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    Carbon Screen Air Filter

    Ok, I was thinking of doing something with the back of a grow box to act as a heat exchanger (aluminum) to avoid requiring a venting fan that would break down. I have another idea - I'm toying with the idea instead of making a sort of narrow box using aluminum screen (think like a screen door...
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    Cheap Carbon Filter

    I was reading a post about someone using a fish pump to blow air out of their grow cab - which got me thinking. Say that air pump was attached to a long tube (say a half inch in diameter, and 3 feet long, coiled up. Now say that coil of tube was filled with actiavted carbon powder... If it...
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    Non-Venting grow box - Aluminum

    I was wondering if anyone here has knowledge of the heat transfer capabilities of aluminum. Say for example, if one side of a grow box was a sheet of aluminum instead of wood - I'm thinking of avoiding exhaust fans for cooling and letting a sheet of aluminum roughly equal to 1/4 of a grow box...
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