Is the water electrolyzer credible?

Most electrolyzers use aluminum-iron electrolyzers, which contain metals such as aluminum and iron. After electrification, electrolytic reaction occurs, and iron atoms lose electrons to form divalent or trivalent iron ions, which combine with the original anions in water to form iron-containing compounds. The color of bivalent iron in aqueous solution is light green, and the main trivalent iron ions are hydrolyzed to form red-brown flocculent precipitation, which causes sensory misunderstanding.