The dependences of variations in the characteristics of coatings and electrolyte state (gross and detailed compositions, respectively) on the quantity of transmitted electricity are experimentally studied according to a concrete complex of initial and boundary conditions. In spite of the relatively minor variations in the elemental composition of a silicate-alkaline electrolyte, the substantial influence of surface morphology and other characteristics of coatings has been revealed. The hypothesis has been formulated that the processes of the formation of heteropolyneuclear complexes based on oxo-hydroxo forms of Si(IV) and Al(III) are responsible for the revealed decrease in electrolyte conductivity and scattering ability.