Hello all! I'm new here...just wanted to thank you all for your helpful hints with using ascorbic acid in treating liner stains! We have a 27' pool and the liner was totally stained on the bottom from a filter malfunction last year. Went to the local Great Escape and asked Jerry (smartest pool dude ever!) and he suggested scraping the bottom with a vitamin C tablet and if it worked, get some ascorbic acid. Well, I went to the local vitamin store and got a 2lb bottle, poured it in, and watched in wonder as the stain simply started vanishing before my eyes! It was amazing! At first, it just worked on a few spots, but by the 3rd day of running the filter 24/7 (like you said), the entire stain was gone! GONE!! I am grateful that there are knowledgeable people like you guys to help other pool lovers with issues like mine! Thanks a million!
KM from Burbank, IL