Ivan, thanks
I will be starting a new and improved batch tonight.
Why the 50mm spacing? Does that serve to limit arcing? My generator has jacks 
for the electrodes which are soldered in a matching male jack. These are 20mm 
apart, but I do not have to use that spacing with clips. I'll cut the silver to 
match both the 1/2 and 1 gal containers in length They are approx the same 
depth.  I'll closely monitor the brewing current as it progresses and use 
constant stirring as before.  That way I can program the %current reduction 
with some accuracy.  With the 1/2 gallon container  and no current limiting and 
a shorter electrode length I was going  approx.5 hrs.  Do you really think a 
day or two??  How do other units get the job done quicker?

radishes,
Glenn