Gorilla cookies Fast Buds

You've got it set up as an exhaust an not an intake right? "You're not blowing air into the tent, but sucking air into it using a negative seal. This should 100% get rid of the smell. If you're filter is over 3 months in use.. some might only pay last 1 grow. But, in saying that. I have an SF filter I use a negative seal pressure. So, your tents sides should bow in a little, don't been blown out by air pressure, "tat would for sure cause a smell" I see your ducting is in the pic running down. Why isn't it connected to the top of your exhaust fan Carbon filter - Exhsust-ducting running from the opposite side and running out the top of your tent. That'll cause a true negative seal. Good Growing.

Prima kilma are not bad. And cheap. You can get exchsnable ones that you can put new charcoal in. But dep on size of your tent. Prima kilma is good. Mine is there 6 months now. And still going strong. Can't smell a thing.