A random google link says that you would need hundreds of plants per person to get sufficient oxygen production [1]. And during night, the plants would just pr

A random google link says that you would need hundreds of plants per person to get sufficient oxygen production [1]. And during night, the plants would just produce CO2, which would presumably get accumulated, making the whole situation worse. [1] - https://io9.gizmodo.com/5955071/how-many-plants-would-you-need-to-generate-oxygen-for-yourself-in-an-airlock https://io9.gizmodo.com/5955071/how-many-plants-would-you-ne...