So i have a similar setup with a 3ft x 3ft x 6ft grow tent, a 125mm (5in?) inline exhaust fan, and a carbon filter attached to it. Despite this, my shit still stank hard (I grew 8 plants in 1 gallon pots), especially when it came towards the end of flowering (started reeking around week 7). If someone opened the door to my room, they would definitely know I got a grow operation going on lol. I had to keep the door closed to contain the odor.
I guess I'm wondering where I went wrong here cause I shouldn't have any smell at all with a carbon filter, or at least close to none.. I've used duct tape to secure the filter to the exhaust fan, and also taped the other end of the exhaust that connects the ducting.
It was my first grow and all equipment is brand new. Did I get unlucky and get stuck with a faulty carbon filter? Is the exhaust fan not pulling air quick enough or pulling too much? Did I grow too much bud at once and the filter + exhaust couldn't handle this type of capacity?
One thing I had to do is place a ONA gel inside the end of the duct that's pointing out of the window to prevent that odor from being smelled outside. So no odor outside due to ona gel, but that odor was somehow leaking inside.
Any advice would be greatly appreciated
I can't link the filter nor exhaust so I'll post the specs of them :
Can-Fan RK 125mm / 310 m³
CAN Filter Lite 300 m³ / h