Quote Originally Posted by waste
chlorine can cause liner fading and failure, but low pH is the real killer.
Right on Waste! Every pool I've seen with faded liners had high CYA but they also have, or had, very low PH. A friend’s pool has a 2' radius white patch that they assumed was from the bleach he used during a Mustard algae battle. I told him that it was more likely from leaving pucks in the skimmer while the pump was off. The high chlorine/low PH water would then settle down through the skimmer and up through the drain.

Dave