I was just wondering at what point of over-chlorination will liner fade occur? Our current CYA is at 60 and according to the Chlorine/CYA chart my minimum FC should be 5 and target of 7. Our average daily FC loss is about 5 ppm, regardless of bather load, rain, sun or any other condition. That translates to 1 1/2 to 2 jugs of bleach per day (96 ozs. jugs), every day. That means I have to bump the chlorine level up to 12 ppm to reach my target of 7 by the next day. My second-shift work schedule doesn't help. I put the bleach in at about 10:00 am because when I get off at night, the pump is off and not circulating. So I'm missing the benefit of more chlorine at night than most people. (I suppose I could set the timer for a second run at night when I get off and add the bleach, but those brewski's are calling real loud by then).
Full sun from dawn till dusk, crystal clear water thanks to BBB, daily CC .5 to 0, ph 7.6.
Just wondering at what abuse level will the liner fade and/or become brittle?