this is a bit confusing. i am setting up a hydroxy cell and am getting a starting reading of 10 ohms of resistnce through my electrolyte.. if it heats up I understand that the resistance drops, but if i read the resistance after the cell has been energized and then turned off.. i get resistance in only one direction. Why? Its almost like it is becoming a battery or capacitor and retaining a very mild charge.. Still I am drawing too much current at times and need to control the current without changing the electrolytic mixture. Are there FET transistors that are large enough to control 40 amps with a forward voltage of 12v or less on the gate? Aren't FET the transistors that are voltage controlled current control devices?