Build a carbon air scrubber for $8.99?????

http://www.gardenscure.com/420/archi...p/t-32890.html




anyone think it will work for a small grow of 4 plants under hps? :rasta:

Looks plausible. I'm gonna give it a try.

Those filters are thin. I can't imagine that will be able to cover up the odor for long.

Aren't those like 8-11 bucks each? You can build your own carbon filter (carbon sandwiched between layers of normal filters) for the cost of 3 or 4 of those.