I've been using sodium hypochlorite in lieu of Dichlor to try and get a fc reading. I do use trichlor during day to supplement it but my cya seems to be rising too fast. I was under impression liquid chlorine didn't raise cya. I know trichlor does but it's not enough to raise this fast. Cya 80, fc 0, tc1, ph 6.8, ta 70. Cya was 40 about a month ago. What's the deal?