Single human produces around 1kg of CO2 per day: https://www.sciencefocus.com/planet-earth/how-much-does-human-breathing-contribute-to-climate-change/ https://w

Single human produces around 1kg of CO2 per day: https://www.sciencefocus.com/planet-earth/how-much-does-human-breathing-contribute-to-climate-change/ https://www.sciencefocus.com/planet-earth/how-much-does-huma... Seems that algae are up to 400x more efficient at CO2 scrubbing than terrestrial plants. See: https://newatlas.com/environment/algae-fueled-bioreactor-carbon-sequestration/ https://newatlas.com/environment/algae-fueled-bioreactor-car... No idea though if such bio-tanks are a viable solution in a rather devoid of solar light shelters.