Figure our square feet in the room, and then look at some fans and see what type of power you need to clear out your room.

Someone above said he read clean the air once an hour, I shoot a shit ton higher than that myself. I haven't done the math but I have an inch out and six inch in, and the room really isn't enormous. 7X10 or so
razzapiggy Reviewed by razzapiggy on . Amount of air circulation? ive got a grow room 120 x 120 x 200 cm with an inducting fan with 250m3/hour specs (5inch)... any ideas how long this should be left on for? as im tryin to offset my electricity spike as much as possible! im kinda workin it out as i type lol im guessing every 2 hours ( or just under ) it will move the whole of the iar in the tent... but how many times does the whole of the air in the tent need to be "refreshed" as per keepin the spike down id like to work to a minimum as raise specs as per Rating: 5