I might do that too. but you need good ventilation for your plants to do well with out adding C02. But If I wanted to add C02 then I could just use an a/c unit.

laidbackgreen- Yes I will have other fans for venting the room. Intake and exhaust. You are saying that a 10inch can fan will effectivley cool 3-600watt lights.
CrusadeBoxer Reviewed by CrusadeBoxer on . Cooling 3-600watt Lights What fan should I use to cool 3-600watt lights. At the same time. How big of a fan do I need and How big of A carbon Scrubber do I need. Thank You for the help ahead of time. Rating: 5