What do people normally do when they leave for a week or so on vacation? Do you 'shock' the pool up to a certain point and hope for the best? I try to maintain my FC at 4-5ppm, it seems to drop maybe 1ppm per day (I do have pucks that I use to help maintain it as well, but I don't use many, just have it turned on low). So anyways, do people just add enough chlorine to get it up to 12 or more and when they get back it should be back around where it should be?