Yeah, Im think of punching it halfway down and on the opposite wall, where the diagram shows "New Exit". That way I have 2 exits, one midway and one higher up to experiment with. I guess I'll have to find out through trial and error which exit will work best for the Cooltube exit and which one will work best for ambient temps exhaust?

Will I need another similiarly sized fan for the ambient temps exhaust? Cos they're pretty loud and expensive...

About its capacity...any stronger than that and my coats hanging in the hall where it exits will start flapping. Theres a lot of air being pumped out...
faithlessxxx Reviewed by faithlessxxx on . AAAARRGGHH!!! I DONT UNDERSTAND! I've just completed one grow in a 1.2m * 1.8m closet, its 3m high too. I had to keep the door open, and with just a dinky little fan blowing on them from the doorway, they managed to stay at about 27C all the way, under a 400w HPS. For this grow, I decided to do things a little better. I smacked out a 12 cm round exhaust hole at about eye level and a 10cm intake at roughly floor level. I inserted the 12cm flex ducting, pulled it all straight and inserted it into my brand new fan which I've Rating: 5