My liner is definitely faded at the points in the deep end where I used to add my diluted bleach. Now that I have officially quit using pucks, I add my bleach slowly to the skimmer. I haven't noticed any ill effects from it yet.

I learned from this forum to never add bleach through the skimmer if you have a chlorine injector in use or with any residue from pucks in it. It could cause an explosion from buildup of chlorine gas.