ventilation question?

how can i calculate how bigger must be the suction fan in my growing room(mean watts,diameter) the room is a 15 sq/ft and i will grow 40 plants.

dimi6o said:

how can i calculate how bigger must be the suction fan in my growing room(mean watts,diameter) the room is a 15 sq/ft and i will grow 40 plants.

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find the cubic feet of the room lengthxwidthxhight then find a fan that pumps that much air out in 3-5 min. ex. a room 10x10x7 =700 cubic feet so you would need a fan that can push 130-245cfm. 130cfm for air exchange every 5 min 245cfm for air exchange 3 min.

hope this helps