I was just wondering about my pool chemistry. Tuesday these were my numbers: TC=4.6, FC=4.6, PH=6.8, ALK.=75, CH=325. I put in some alkalinity plus like the pool store said. These are my numbers today: TC=3.9, FC=3.5, PH=7.2, ALK.=105, CH=325, CYA=150 (THEY DIDN'T CHECK THIS 2 DAYS AGO)...