Buderus anodes corroding differently: take a look at the pictures

paulatrb

I took the one to the right out of a 12 years old unit. I replaced it with the one to the left. This had been in there only a month and looks completely different and WAY more corroded. With black stuff allover it. Why????

paulatrb

Here is the image

paulatrb

Here is the picture

paulatrb

Finally here is the image

kcopp

Aluminum vs. magnesium?

paulatrb