I really like this method. I found that graphite makes a good sacraficial anode. Graphite is conductive, but non metallic and non erosive. There are apparently two types of graphite, one falls apart in water. I got two boxes off eBay, one box falls apart, the other has lasted for three years of intermittent use, with out cleaning. I made an a "array", spreading them around so that more of the rusty metal "sees" the graphite. Works like a champ.
Scott
