@NeuroticGoose If you see this read this.

Don't scold me for bad grammar I use voice recognition.

The puffed oxygen loop starts by turning polluted oxygen into slime using puffs The polluted oxygen is sourced from a polluted water sublimator. The slime produced by the Puffs gets sweeped up and sent to a bunch of algae distilleries the algae distilleries turn the slime into polluted water and algae The polluted water gets sent to the sublimator from earlier while the algae is used to fuel the algae terrariums The polluted water produced by the algae terrariums gets recycled in a water-sieve With some water added by the Algae distillery is to fuel a slight loss In the polluted water outputted by algae terrariums.
This technology is not only scalable but available across all versions of not included As in all the DLC is and the original game.

Also go watch his video on his first time playing oxygen not included