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  1. F

    4 square feet ventilation

    Thanks for the input, I have just found one that isn't too expensive (~$40). Still damn expensive, but I hope it will help as much as people said it will.
  2. F

    4 square feet ventilation

    I have a 2x2x4.5 ft. grow area available. I figured that I should go for a 250W HPS light (I don't have access to cheap LEDs) and 2 medium sized plants in Air Pots. My concern now is the ventilation. At first I thought of getting a 250 m3/h inline fan with a carbon filter, but I think they're...
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