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  1. M

    Air scrubbing?

    Hey guys! Almost done with my design for my grow box! Woohoo! All I need is some ventilation help. I have a mini fridge, about 6 cubic feet, and I'm trying to make sure there is enough CO2 in the air. The guy at the grow store said to "scrub", or recycle, the air, but I'm not too sure what...
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