6 X 12 ACTIVATED CARBON FILTER HYDROPONIC ODOR SCRUBBER - eBay (item 350211784582 end time Jun-16-09 00:35:08 PDT)
This one looks a little more professional. Seem to have a good feedback rating as well. Do I need to put this in a plastic tub like in the pic at the bottom of page or can I just hook it up to my vent system and let her rip ?