Here a few pics. It contains 500ml of NaCl solution containing 60g NaCl and a knifetip of K2S2O8 to moderate (alternative to the toxic K2Cr2O7).
It is a constant current power supply set to 15A and starts cold with 10 volts, but the voltage gradually decreases when sol'n gets hotter (up till 80
C).
I have an MMO anode in it.