Hello fellow growers, I've been trying to design the perfect sealed room, won't be setting it up for a while, but want to have everything dialed in before I start setting up. The room dimensions will be 14 ft x 22 ft, completely sealed. I've heard that air exchangers were good to have in sealed rooms, but I know nothing about them. So I would like to hear from some experienced growers on this. I also have a question with carbon filters. If the room is sealed, is a carbon filter needed? And also, I've heard that carbon filters waste co2, is that true? Thanks in advance.