John, I used an AC adapter set to 3 VDC at approx 300 mA. Found some zinc strips on eBay and soldered four of them together as anodes (the anodes are depleted in photo below). Mixed white vinegar, Epson salt, and a bit of Kayo syrup in one of my wife's Tupperware bowls (won't do that again). Definitely a crude contraption- but it worked just fine.