My pool is 16 months old now. I work with my pool store very closely that constructed my pool. I have always had a terrible time getting my pool chemicals balanced. Not once in 16 months have I tested my water and had good levels. I test twice a day pool side and take in a water sample weekly to the pool store. We use all Bioguard chemicals and my pool store uses their Alex system to test water. Pool store wants me to keep my PH at 7.4-7.6 and Adj. Total Alkalinity 125-150. This has been an impossible task for me. Everytime I test my PH is around 8.0+ and I add several pints of muratic acid in daily to lower the PH. Then my total alkalinity drops and I have to add Balance Pack 100 to raise the alkalinity. This is a back and forth battle that I have never been able to maintain. This is the second pool I have owned and never remember having this problem before. I realize that high PH is normal until my plaster cures in new construction but even my pool store seems baffled by how much acid I have to add. I was going through 4 gallons of muratic acid every week. It is slowed down now to about 4 gallons every two weeks. If anyone can help I would appreciate it. My costs on chemicals is outrageous. My latest testing Sat. idx. 0.4, TDS 1800, CYA 80, Total Chlorine 2.1, Free Chlorine 2.1, PH 7.7, Tot. Alkalinity 114, Adj. Total Alkalinity 90, Tot. Hardness 277, Borates 30.