I am cleaning the cell of my chlor-ease swg and not having seen the cell prior to use I have a question. The outer layers front and back I would say were silver and the interior layer was black. Is that the normal colors of the cell or are the outer layers suppose to be black also ? They say a white cakey color is scale and that means they need to be clean. Is the silver looking color to me what they call white cakey color. Thank you for any help.