Have you ever monitored the ph while doing the bubbling?  I was wondering if
CO2 absortion would cause any significant production of carbonic acid.  If
so, it might be interesting to bubble CO2 instead for comparison.

Marshall

"Robert L. Berger" wrote:

> Hi Trem.
>
> That is a good piece of engineering. I like it.
>
> I guess that I will get an air pump and try it.
>
> "Ole Bob"
>
> >
>
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