I wonder if it's possible to have some CO2-eating algae in water that you bubble air through. The idea being you have something biological and microscopic with

I wonder if it's possible to have some CO2-eating algae in water that you bubble air through. The idea being you have something biological and microscopic with a quick lifecycle, so you're taking advantage of each point in a 3D volume. Question is, it surely needs nutrients other than air, do you have to keep pumping those in or is the system self-contained? Is the sequestered CO2 in the form of dead algae you scrape / filter from the top / bottom? What's the maximum depth before sunlight's insufficient? (As opposed to something like planting trees that's inherently 2D and takes many years to reach maturity.) Hmm, some quick Googling shows lots of results for algae carbon capture, e.g. this company: https://newatlas.com/environment/algae-fueled-bioreactor-carbon-sequestration/ https://newatlas.com/environment/algae-fueled-bioreactor-car...