To go a little further....when done correctly there is no reason to suspect bleach will do any damage to your liner. It is basically no different than liquid chlorine.
With that said, I recall reading something here that it may be possible to stain/fade your liner if too much is poured too fast and without the pump running. You should always be pouring slow enough for it to all get caught in the return stream and not go straight through it. It sounds most likely to happen if someone was doing the SLAM process and always added all their liquid in the same spot that was not in front of a return jet.