I don not think anybody is currently doing this, on a side not here is a good read about the dangers of oxygen: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?
www.damninteresting.com said:Theres a caustic substance common to our environment whose very presence turns iron into brittle rust, dramatically increases the risk of fire and explosion, and sometimes destroys the cells of the very organisms that depend on it for survival. This substance that makes up 21% of our atmosphere is Diatomic oxygen (O[SUB]2[/SUB]), more widely know as just oxygen.
O2 + HID = mushroom cloud
he said co2
ahhh my bad...misread...you are crazy lol...and wouldn't o2 flash and explode if the room was filled and the light fired up?