Green-manure water fern - azolla filaculoides ??

Anybody here either looking into or already have experience with "azolla filaculoides" — the green-manure water fern that has been used in rice paddies for a 1000 years?  I’m uploading a link to an article that’s intriguing but not informative enough for a dedicated gardener or homesteader.

The plant with its symbiotic blue-green cyanobacteria sequesters carbon dioxide & fixes nitrogen.  I live in a coldish-winter region.  And, I don’t have enough info to plan to do anything yet, but I wonder if this could be cultivated in a northern-temperate-zone pond, harvested & worked into soil during warm & hot months, and re-seeded into the pond in spring once the days become warmer again.

Water-Fern green manure

While I don't have any experience with azolla it sounds like a good aquatic plant with many uses.

These threads might be of interest:

https://permies.com/t/126327/Pond-bio-matter

https://permies.com/t/137182/obtain-large-amounts-organic-matter#1075977