Terry
Willis already answered your questions in the same post ... must
be a hot afternoon in Hot-lanta... <g>
Here is a simple unit, 500ml distilled (farm grade), 12mm carbon
cathode, two 2mm SS rod anodes. Input voltage 4.6V at 6.4mA.
That seems to prove his point about carbon being special for this
kind of application - to get that kind of current in distilled
water with such a gap - combined with Fred's speculation about a
possible catalytic effect --ergo, am ordering carbon cathodes to
try. These folks have them:
http://www.sargentwelch.com/product.asp?pn=WLS14570-C_PK&sid=google&cm_mmc=google-_-cpc-_-sgtw-_-carbonrods