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Hi all. Just setting up a new/refurbished grow room. Prior to now, it was never fully sealed, no co2, not much for fans. 1 1000w light, open air. Best I ever got was about 1 oz per plant, that's after about 1 ft vegging, then to flowering. The wife got her card for 15 plants, so I'm off to...

Everyone knows it is beneficial to add co2 during the light stage. Any experiments done with adding o2 to the atmosphere while in the dark period? Would this be any good?