Quote Originally Posted by Weedhound
I have a 470cfm that cools my 1kw just fine. Something to remember.....everything you put in there puts off its own heat. While more fans may cool your light....too many of them will simply heat up the room themselves....fyi

edit...yes, they are loud.
These are only 424 cfm fans, but should do the trick nicely.

These fans are for exhaust only. Intakes will be passive. So any heat they generate should be sucked out of the room as I will be placing them as close to the top part of the room as possible; since heat rises this will make it easier to exhaust it as it's already at the top of the room away from the plants and the fans are blowing out, not in.

Nice thing about these is that they're only 110 watts. About 30 watts less than my current box fans I'm using. So I got an upgrade and a slight power savings

edit: 1 fan is the exhaust side of the cool tube while the other is the exhausting the room through a charcoal filter, or kitty crystal filter. I will have a 12" passive intake on the backside of the cabinet with an a/c filter fitted to keep large air contaminents out of my sealed grow area.

Didn't mean to give the impression that it was an active intake/exhaust for the cool tube only. They're both for exhausting the light and the room.
daihashi Reviewed by daihashi on . WooT.. New Toys! Just arrived today. More on the way in 4 weeks or so. :thumbsup: Rating: 5