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Re: Nitrogen fixing plants; Azolla

>Azolla. Does it quite well. Often you'll find this plant downstream from
>other aquatic plants.
>It has a symbiotic relationship with cyano's (I think it's Anaaena) giving
>protection and nutrients in exchange for more than enough N. I recall that
>azolla can fix more N than about any plant, even more than legumes from what
>I've heard. It is used in Rice production is SE Asia as the "green
>fertilizer factory". Better than dumping processed fertilizer like we do

Thanks Tom & Brian.  The question I now have is does this plant grow in
aquaria?  How does it look?  Do the cyano bacteria the plant exists with in
mutualism ever run afoul in the aquarium? 

NEW from Asia!  GIANT colourful WOODSHRIMP: