Hey guys, thought I would add a hack. I got rid of my CO2 system to try to save some money on my grows. I kept the monitor. I maintain between 500-1000 ppm. The way I accomplish this is by moving my vaporizers into my semi-sealed room where the tent is located. I also moved my mushroom grow, worm farm, KombuchA brew and now starting to breed mealworms for my chickens. I also grow in living soil beds which produces it own CO2. And I’m considering getting a rabbit that can live in the room too since I’m there a lot.