Carbon or charcoal filter is the way to go, please read the FAQ's or search the site for more info.
4x5 Reviewed by 4x5 on . How to stop smell Hay everyone i have a question about the strong smell of marijuana I have been growing for almost a year now I installed a air filter to stop the smell from leaking out but I can sometimes still smell it I was wondering what is the best kind of are filter to stop it???? :confused: :confused: :confused: :confused: Rating: 5