I have a 5x5x8 room air tight. I am currently running CO2 for 15 minutes every 45 minutes at around .7 PSI
Should I up the PSI or the time? every 30 minutes instead of every 15?
I know I should invest in a controller but they are pricey, so after this harvest I will be buying one. For now I need to estimate the PPM inside my room.
