new carbon scrubber idea

just thought it up and made it lastnight,drilled holes in outer chamber near top and holes in inner chamber near bottom. to get more air to pass through more carbon.inline fan will sit in 4 inch sleeve on top for suction,all seals are very airtight,well i gotta go get a fan and hope and put this thing to a test,any comments?.ill prob put nylon between 4 inch sleeve and inner chamber,ill post new pic when its finished.PEACE.