The greater the concentration of electrolyte in the water, the less current you need. It seems to me this is directly related to ph. The higher the ph
is in terms of alakalanity OR acidity the less electricity required. Waste heat is the measure of process inefficiency as far as I am concerned. At two amps DC AND two heaping tea spoons of bakingsoda my 1 qt electrolizer began heating up. With two level teaspoons of bakingsoda, no heat.