I asked Carl to talk to you about your liner rippling . He'll be better able to help you with that than I will. As far as FC of 0, you need to get some bleach (maybe 3 quarts) in there so you don't end up with a green pool. Just pour it in front of the hose so it will quickly disperse throughout the water. Then, once it is totally filled, run a complete set of numbers again and post them. May need to add more cl in the morning if you are below about 5 -- assuming that your cya will be around 50. If it is different than that, refer to the "Best Guess CYA Chart" to determine how much chlorine you'll need.