I have a Spanish ribbed newt who seemingly has a thick layer of unshed skin and has been this way for more than a year as I thought it was just coloration. Her skin is wrinkled and dark. I haven’t seen her shed in maybe more than a year. I don’t know how to resolve this issue and any help is appreciated. The water ph is on the higher side maybe up to 8.2 but I’m adding tannins to reduce this. The last 2 photos are before the change in her skin, thanks in advance.