The "sediment" is pus aka lymphatic fluid. The same pus/lymphatic fluid that comes out the skin via "acne" when the kidneys are not filtering correctly. The kidneys stop filtering correctly and cannot get this lymphatic fluid out, so it will start coming out anyway that it can via the third largest eliminative organ, the skin. Hence you get acne and all kinds of skin issues.I'm curious about the sediments that appear when kidney filters well. I did searches with Google and Youtube. With no success.