Osburn
Active Member
I'm doing my very first run in a sealed room. I don't have a CO2 sensor and I'm dispersing the CO2 with an oscillating fan. The plants that get the most love from the oscillating fan are blowing up, but the new growth leaves are starting to yellow. I think they might be getting CO2 "burn" because I'm using the fan instead of hanging tubing from the ceiling. Thoughts? I just threw them into flower and right now I'm giving them 2.5 cf/hr for 30 minutes four times a day when the lights are on. The room is 10x16x8, but the grow area is currently 10x5x8...