You should be good with the 4 inch fan, I use a 4inch fan for my closet and it works great. \



Are you going to be cooling the bulb, what type of reflector are you using?
drudown11 Reviewed by drudown11 on . Little help with my 250 HPS cabinet design? Hello friends, This post is kindof long... Cheers to those who actually read it all :). With information from this site, I was able to successfully complete a rubbermaid tub grow. So I have to THANK YOU ALL for this wealth of information. Now I am planning to build a second, slightly more classy cabinet. As a patient I have an easy supply of clones, so my plan is to start the clones in the rubbermaid, then move them in to the new cabinet for flowering when they are ready (somewhat Rating: 5