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Re: CO2 from Carbon Electrode

Getting CO2 by electrolysis has got to be the most expensive way of
producing CO2 short of burning diamonds.  Sugar and yeast is a lot cheaper
than carbon electrodes and electric current, not to mention the cost of the
apparatus.  The 4% CO2 in my breath is absolutely free.  While I was
reading today's APD I breathed into a plastic bag enough 4% CO2 to supply
three 15 gallon tanks for two days.

Paul Krombholz, in gloomy, damp Jackson, Mississippi.