how do i use a passive air system for my grow box

Discussion in 'Grow Room Design/Setup' started by johnnyd, Aug 13, 2003.

  1. where should i put my fan outake on a Passive air system for my grow box.

    the top or bottom?

    is 6-12-6 fertilizer good for the vegging stage?
  2. intake = bottom since cool air sets and hot air rises, and fan on top since u want hot air gone
  3. yeah, exactly. snf i personally think that 20-20-20 is best for vegging;)

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