The International Open Source Hydrogen On Demand Builders Network.
Why not use battery acid? Will not attack aluminum and you can get it for free from used car batteries.
Lye and citric acid together
I tested baking soda but fact is its Less Conductive in water & when the HHO cell heats 80*+up you get some CO2 gas w/Hho so safe NOT the best ,I'll be retrying NaOH(lye) with my prototype hhoA cell !!!!!