I am thinking of getting a bigger tank to clean some grills and was wondering if anyone has hooked up two chargers. The reason I ask is that is appears from the youtube videos I've watched, the best rust removal tends to be closest to where the positive cable is hooked to the sacrificial metal. Since the griddle is so long, I was thinking of hooking up two chargers near the ends of the sacrificial metal to perhaps draw the rust more evenly. Does this set up make sense?