I have a round 24' pool 52 inches high, with a hayward gas pool heater,hayward sand filter. I use a lamotte pro 9 test kit. I had some mustard algae I have been trying to get rid of. My cya was around 80+. I drained over 50 percent out. After refilling the CYA is 33. FCL-3.27,TCL-3.33, PH-7.5, Alk-201, CH-LO. How can I lower the TA without raising the CYA again. I just switched to liquid chlorine so I don't add any more acid. I am on a well and the well water tests ALK at 210, so it will be a constant battle. Thanks