I have been to numerous pool stores and everyone is telling me something different. My TA was 230 and ph was 7.6. They told me to add 3 gallons of muriatic acid 1/2 gallon at a time in one spot in the deep end of the pool with pump running. Went and got the water tested a week later and TA went to 248 and ph 7.1 My CYA is 39, total chlorine is 9.9. What can I do to get these numbers where they are supposed to be. The pool is crystal clear and have not turned the heater on yet in MN so the water is 60 degrees. Pump is running continuously. Any help would be greatly appreciated! I can't go back to the pool store and have someone give me another wrong answer!