And keep in mind, you do not want a fan with a high CFM rating, 60-140 is good, the carbon filter needs a millisecond to make contact with the air in order to scrub it properly (most efficiently) the slower, the better. So I say stick with under 100 CFM for a filter this size. If you have to go over by a little say 150, not a big deal.
THContent Reviewed by THContent on . DIY: Carbon Air Filter - CHEAP, and EFFECTIVE! Security is important to marijuana growers, and odors can lead the police or unwanted neighbors straight to your grow room. There are a number of 'odor solutions' out there, but they can be quite costly. Here is a simple method you can use to build your own carbon filter. It will take you about half an hour to construct it, and it will cost $20 to $30 dollars. And it is completely safe. Aside from its main advantage of being ultra cheap, this method is also very versatile. It utilizes the Rating: 5