Ventilation Help

So I got my cab inside my crawl space which is a perfect spot. But anyways, I got a 6" inline fan (180 cfm) cooling my 250w HPS for exhaust and nothing for intake yet. I was going to buy some PC fans for intake. Would this setup work? Was thinking around a 100 cfm PC fan so I would get negative pressure in my cab. Please help. Looking to order later today. Thanks and +rep for those who help

You may not need an air intake if you cabinet is not air tight. By sucking out the air with you inline fan you are creating negative pressure in the room and air will be sucked in via the cracks. If you want though a 100cfm axial fan (computer fan) will be just fine.

phillipchristian said:

You may not need an air intake if you cabinet is not air tight. By sucking out the air with you inline fan you are creating negative pressure in the room and air will be sucked in via the cracks. If you want though a 100cfm axial fan (computer fan) will be just fine.

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100 cfm. Thnks bro. +rep. anymore suggestions?