See adjacent post for title of elec 50 g HW that had hot flow reduced in 5-10 seconds. I should have titled it about how to clean tank but I could not get it changed in the list visible to viewers. Sorry for the inconvenience, I am new at typing these things.
Local suppy house had alum, tin zinc alloy anodes and the factory offered aluminim only. Factory says the 3 metal alloy is for stinky water, probably sulfur which most people do not have.