Just gonna buy some activated carbon. Get one of those metal pencil holders with all the holes. Pour the carbon in there. Cover the whole thing with pantyhose. Put it in the exhaust hole for my grow box. Then have the fan duck taped to the filter blowing the air out. Will that work? This is for a small scale grow. And trying to figure out how these carbon things work is giving me a major headache. So do i have the right idea? And will that keep smell to a minimum?