Thanks for the input/help/encouragement. I am currently holding ph very well with my alkalinity #'s. I am adding 3 quarts of 6% bleach every day to maintain a chlorine level of 3. I have a fairly heavy swimmer load with one small child daily combined with 100 degree days and lots of sun. I feel that this is to be expected. The 2 days that no one swam I ended the day with chlorine levels at 3 one day and between 2 and 3 the other day. What do the experts think of my cya???