grow room/box ventilation

elcooperino said:

the simplest way is to by to small fans preferebly in a square casing mount one in the wall blowing into the room and mount one in the wall blowing out of the room then atatch dunt hose from the fans an then let it hand dow (this will stop any light from getting in) this will be good ventilaton on a simple scale but if you can only afford one then use the on blowing in it will circulate cool air in the room

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