I'm so glad I'm clear on this now. For some reason I was aiming for about 16 volts with 320ppm.
This has also now brought up something I did when I very first started and it's a bit embarrassing to admit because it was such a dumb thing to do. In trying to figure out how to clean the electrodes with a blowtorch without burning myself, I lifted the electrode holder with the electrodes still in place and started cleaning the small silver rod...which of course got so hot it melted the perfect predrilled hole and now I can never be completely sure of spacing because it makes the electrode using that hole floppy. I know what you're thinking...ridiculous thing to do! It absolutely was and I have no excuse for not thinking about what would happen. So, now with understanding that spacing is so important and plays such an important role with voltage, I should probably drill 2 new holes in my lid so I have nice straight holes for spacing and the electrode doesn't move with the stirring, shouldn't I?