Do you know a chart of how fast a plant turns over carbon dioxide? I'm trying to search, but the results are mostly global warming related.
https://www.sciencefocus.com/science/how-many-plants-would-i...
>back-of-an-envelope calculations suggest you’d need around 400 houseplant-sized plants.
I have 18L of Spirulina, which appears to be having some effect, though not anywhere near a complete offset. Though, my setup is quite sub-optimal, and I've seen articles that suggest Chlorella is a couple times more efficient at biofixation than Spirulina. Continuing to tinker :)