Just a question for my understanding. My CH has been decreasing since my first test results in early July. My original tests were 150. I added some to bring it up to closer to 200. It remained there for a few days then started decreasing. It is now down to 100. What causes the decrease? I know it doesnt really matter because i have a vinyle liner but would still like to keep it around 200. My newest test reults are:
FC 10
PH 7.1ish
CC 0
CH 100
TA 90
CYA 35
I havent added anything except for Borax for ph, bleach, cal-hypo
FC 10
PH 7.1ish
CC 0
CH 100
TA 90
CYA 35
I havent added anything except for Borax for ph, bleach, cal-hypo