Hello everyone. I was doing some testing today and found that adding a yellow silver colloid 30 PPM increases gas production like you wouldn't believe! I was able to get good gas production from a cell +NN--NN+ with 9 volts and 500 mA. My guess is that the silver in the water made it much more conductive. I have not measured gas flow yet but I will be doing that soon and will post results. Has anyone else tried this yet?