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Cfl's may not require as much cooling airflow as with traditional lighting but the plants still need enough air-exchange for good respiration. Does anyone have any idea at what rate the volume of air in a grow cabinet should be changed, cooling issues aside? Thanks.

I'm a newbe, just started reading and making preliminary plans for a grow box. I didn't know you could use that kind of light. Are they cooler to operate? And, how many watts per square feet? By the way, call me paranoid, but, as a photoshop pro and a crime novel junkie, I think I'd be cautious...