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An Oxygen Tank is an item gradually used up to supply a station or spacecraft with oxygen. Adding it to a closed module will cause Pressure to build up.

The rate at which it depletes varies according to the amount of modules it must fill with oxygen, and the amount of total oxygen tanks that are connected. When an Oxygen Tank has been depleted, it may be refilled by placing it into an empty slot in an Oxygen Garden.


  • More Oxygen Tanks reduce the depletion rate per individual tank, this being with every tank.
  • Any station having a Oxygen Garden or spacecraft docked to one will prioritize Oxygen Tanks and Carbon Dioxide Scrubbers over the Oxygen Garden.
  • Oxygen can be used as a makeshift source of propulsion for a single module, by opening an unconnected hatch.