Yeah I dunno, man - electrolysis doesn't pump up the temp crazy amounts. My only exposure to it prior to that water welder was "we sticks our cathode and our anode in the waterz and we turns on ze battery" but you get out a little potash and that shit starts to churn like goddamn Alka Seltzer. You've got a pressure you need to maintain - that's easily automated. You've got a temperature you need to maintain - that's easily automated. You basically need a continuous column that allows you to filter out your sediment and otherwise you just have a continuously-fed electrochemical vat which, hey, hit it with solar or some shit. I guess that's my broader point - I'm a really shitty chemist but redneck chemical processes? I mean I've run aquariums since I was a kid and this looks like "aquarium tech" not cold fusion. Where are the big sticking points you saw? Because "keep it under 80c" to me just says "run it underground."