?
"TimR" wrote

From the McMaster catalog:
Also known as sacrificial anodes, these rods and pads are attacked and
consumed by any corrosive action that would otherwise attack and consume
your valuable equipment.


Did your anode look consumed, or just coated and scaled up?

Scaled up and black. It is about 3 years old. Temperature is about 120. It
gets little use most of the week, but one day a week it gets water running
through it for about an hour.