Ok so on Saturday the family is headed on vacation until the following Saturday. My pool chews through about 3-3.5ppm chlorine per day from sun exposure and occasional bathers. So for 7 days I should add 21-25ppm above minimum of 4. So 30ppm total on saturday morning? My CYA is 50. Will it damage the vinyl liner to be that high? I will have someone to turn the filter on every morning and off every evening. Any advice/suggestions are welcome. I also have a few dichlor pucks available and a chlorine feeder as well. Thanks for any replies!