Thanks for the info. I had my water tested today and here are the results.

Total Chlorine 4.0 ppm
Free Chlorine 4.0 ppm
Combined Chlorine 0.0 ppm
pH 7.4
Total Alkalinity 55 ppm
Calcium Hardness 275
Stabilizer 65 ppm
Salt 3300 ppm

The pool is a 15,000 gallon gunite pool with PebbleTec finish. I guess the chlorine is not all that high after all. My drop test kit only goes to 3.0 ppm and the color of the sample looks much darker. The only suggestion the pool store had was to add 9.4 lbs of something to increase the alkalinity.

Mike