element2k10
Well-Known Member
hey guys i have an inline fan that provides 160 cfm free air flow and i wanted to vent out my cool tube and growbox with this fan. my grow box is 2x2x4 and has a 4 inch exaust hole twoard the top i was thinking of running a duct from that hold to one side of the cool tube so air being drawn from the box will pass over the bulb out the other side through an inoline fan which will blow the air outside its a simple design im just wondering if this would be enough cfm to bvent my box plus keep the bulb cool if it isint i would be able to add a computer fan to the exaust hole in the box?