Sir Douglas Cook wrote:

I do have a question for you.
If fish and there waste produce CO2,
Why don't you just add more fish?


The CO2 added by the fish is small compared to levels needed for
"triving plants."

(Which, with even a little thought, means you're in an unnatural
equilbrium, but I'm not gonna go there...)

-Donald
--
"A positive attitude may not solve all your problems, but it will annoy
enough people to make it worth the effort." -Herm Albright