I've had my pool for about 7 years and have done all the maintenance on it myself. I noticed every spring when I opened, I had to add stabilizer to bring it up to about 30 (using the liquidator and 12% chlorine) and I assumed this was due to the pool water being diluted in the summer with rain, thunderstorms, and me partly draining for the winter months. This year I bought a new bottle of the CYA tester (Taylor kit), and it showed my level at about 110 I'm guessing the old test bottle was bad, but at any rate, my pool is sitting at that level and I'm wondering is there any detriment with having the CYA at that level? I guess I'll have to have a chlorine level of about 10, would you notice this higher level when swimming? If I drain, is there a possibility the vinyl liner could be damaged, come away from the pool wall (it's about 7 years old)?