Simple enough, even I can do it!

I have a small area, this filter set-up is perfect. The lower volume in-line duct fan is a great idea, a bigger centrifugal fan would probably implode my garden.

Thanks again!
endive Reviewed by endive 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