Long time listener and first time posting and growing. I feel like I have learned more than I could have ever imagined, but I am a bit unsure about grow tent ventilation. I am currently in a 40x40x80 grow tent with a 4 inch ac infinity cloudline. I have the fan inside the tent above my light and venting through the top via some ducting. Is this enough ventilation? How can I tell if I have enough ventilation? When I look through the windows in the tent I can see straps and wires moving when the fan is on, but I am unsure if this is enough. I can feel the air coming out of the ducting so I know it’s working but I want to be sure I have enough air movement and more importantly want my carbon filter to work. Any and all help is really appreciated. Thank you.