Well... As y'all predicted, I am now beginning to see signs of bleaching of my liner. Sooo... I supposed it's time to let it come down. I hope I am not too late. We got a 15-year liner about 4 years ago, but I would bet the warranty won't cover this. Oh well. On the brightside, it looks like the algae is gone. "So I got THAT going for me... Which is nice."