Thanks all for the words of advice. I'm gonna monkey with it. I think I have virtually the same setup several others here have. I'm just anxious to get my first grow going in there. Any other thoughts? Does anyone have pics of their passive intake on a rubbermaid box or at least want to tell me the size?

thanks,
M.
Thomas Magnum Reviewed by Thomas Magnum on . Rubbermaid help I just finished a rubbermaid growbox like many others here have built. Sorry, no pictures yet, but they're coming. I have six 26w cfl with a 4" inline fan and passive intake. The fan is the duct booster type (tiny fan inside a 4" metal duct) which supposedly pulls 65 cfm or 85 boosted. On my test run, temps inside the box reached 100 F. Ouch! Is it likely that a speed controller boosting the fan will be enough to control my problem, or should I resort to buying a different fan or run dual Rating: 5