Bottom line, we can't trust ANYONE, except for our chosen Guru Steve Barwick.
Steve is the only Expert that I have not caught lying, cheating and slanting the truth.
The TRUTH on polarity switching:
Only the positive electrode is stripped of silver. The negative electrode NEVER wears out. Therefore, get a LARGE 1 oz silver bar for the Anode that will last a lifetime and use a stainless steel electrode for the cathode. Polarity switching removes silver from both electrodes equally if they are both silver. If polarity switching, both electrodes get black.