Love to know what you found out as I'm thinking of getting some PC fans for my grow box. Did ya go ahead? how did it turn out?
FilthElement Reviewed by FilthElement on . What Size Fan For Growbox? And where to buy? I have two 18 gallon rubbermaid containers stacked on top of each other. There are 6 to 8 cfls in there at a time. I have fashioned a carbon filter and a passive intake that will open up when air is being pulled through the box. What about a fan to pull this air? I went to Lowes and they couldn't help me out. I need something almost silent but something that will keep the box cool. I was looking at computer fans but how many cfm fan would I need? Rating: 5