It seems as though everytime that I attempt to prolong the game cycles, The oxygen deoxidizers and algae terrariums are in need of algae. It would be cool if there were some alternative ways to produce oxygen. Great Job!
Steps to Reproduce
I was attempting to sustain the gameplay several times, but ran out of algae (accessible algae) more than once. Other ways to produce oxygen should be a solution.
This issue has not been confirmed by a developer yet.