with a 1000 i would recommend getting a quality inline fan rated around 400-500 cfm. look for vortex, canfan, fantech. they are all about same quality. you are working with alot of heat in a fairly small area.
texas grass Reviewed by texas grass on . Question about cooltube and room ventilation Ok so I am thinking of using cooltube for 1000W HPS like a 200-300 cfm fan with maybe 4 feet of strait ducting... so if i were to do this what kind of exhaust fan should I have for the room 4ftx5ftx6ft? Like do I need the 3 times the volume of the box exhausted per minute even though I have the cool tube? Rating: 5