Ok I have a couple of ideas for this I make one of the ghettoest looking air filter by buying a few of those replacement fish tanks and tape a few together then get some HVAC then a few lengths of furnace ducting the ones that attach to your floor ducting or ceiling or even your walls depending on where you live But I might just buy one but I don't really have the space because it's going in my closet but I was thinking of venting it into my attic because there's a attic panel right above my grow box And can anyone tell me if I can buy a carbon filter from home depot or home hardware thanks and a rough price range
Just make one. You can buy activated carbon from wall mart and make it as long/short as you want. ( it's in the fishing section I think)