You can also feed it to people and livestock. I've been growing Spirulina, a cyanobacteria, in aquarium tanks in my window for eating purposes. It's quite high in protein, antioxidants and beneficial oils.

When I get the time, I'll likely also try making some biodiesel and/or gasifying some of it to see how feasible it is as a fuel source.

You should also look at Azolla. It grows crazy fast and is also high protein and fixes both carbon and nitrogen.

https://en.wikipedia.org/wiki/Azolla

Thanks, I'll see if I can find some.

I'm currently also experimenting with duckweed growing in my backyard, although I find that it doesn't play well with the other aquatic animals and plants, as it appears to smother them out.

If you have problems with duckweed smothering, azolla will probably be worse. Duckweed has to pull nitrogen from the water, azolla harvests it directly from the air. It makes a good feedstock and fertilizer though.

Here's the question: how does it taste?

Fresh, it's pretty tasteless, and quite easy to incorporate raw into other foods such as a smoothy, soup, pesto, or a spread in sandwiches.

> bury the mass

Or burn it - at least it would be a sustainable energy source.

Easier to just burry it, treating it for use in combustion systems wouldn't be worth it given the energy density is low. Better off using Sabatier process with excess solar at that point.

Create a carbon cycle similar to the water cycle then?

Already exists. We've now identified many biogeochemical cycles.

An incomplete list:

https://en.wikipedia.org/wiki/Carbon_cycle

https://en.wikipedia.org/wiki/Oxygen_cycle

https://en.wikipedia.org/wiki/Nitrogen_cycle

https://en.wikipedia.org/wiki/Calcium_cycle

https://en.wikipedia.org/wiki/Silica_cycle

https://en.wikipedia.org/wiki/Phosphorus_cycle

https://en.wikipedia.org/wiki/Sulfur_cycle

https://en.wikipedia.org/wiki/Selenium_cycle

https://en.wikipedia.org/wiki/Mercury_cycle

https://en.wikipedia.org/wiki/Hydrogen_cycle

https://en.wikipedia.org/wiki/Rock_cycle

https://en.wikipedia.org/wiki/Carbonate-silicate_cycle