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    The infamous question regarding CFM and passive intake. All help is appreciated

    I live in the north east. out side temps can be 15-20 in the winter, basement can be around high 30's low 40's. Summer can be around 90's, basement can be 80's. The box is 6'x4'x5' going to be insulated with foam board, gonna have orca grow film. The outside of the box is going to be painted...
  2. S

    Passive intake question. LED grow room

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