So checked my pool at 7:00AM TC-5 PH 7.8 TA 110 CYA 55 Salt 3200. So I wanted to get the PH down to lower TA added 50oz Muriatic Acid (31%) So after about 4 hours I added 24oz of chlorine (14%) trying to get the FC to 6. I waited about 3 hours re tested PH 7.2 FC 3.5 so after adding more chlorine the FC went down. So what's going on? I also checked the FC last night FC was 5 same reading in the morning.