ok, super fascinated by this one. My surfaces are turning green. Copper oxidation is the only thing that makes any sense. But I'm not getting the build up that I expected or hoped for. Perhaps the earth batter is not the perfect driver i was looking for. I'm a patient guy, and i don't mind waiting a few weeks if I'm making progress... it might be that I left my tree out for too long when I forgot to put it back in solution after my last log entry for about an hour.
Frankly, it's kinda cool to turn a copper tree green. Was hoping to build up a bark like texture and keep it shiny copper... but that may not be an available option.
Throwing it back in to see where this failure goes.