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Self-sustaining system

At 03:48 AM 1/9/99 -0500,  Bill Hamlin wrote:
>So... nobody has a self sustaining natural system.  I don't know how big
>a closed system is before it is self sustaining, but it is something
>bigger than our tanks and smaller than a planet.  

Actually, no.  I was in the library at Bodega Head Marine Research Station
(a very nice library) and stumbled across:

 Adey and Loveland, Dynamic Aquaria  pp606-612

which talks about closed system tanks as small as 70 gallons (which was a
West African stream tank) and lists ALL phyla represented.  If someone can
find this book and make a copy of the relevant pages for me I would sure
appreciate it.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com