FC - 2.5
CC - 0
PH - 7.9
TA - 110
CH - 280
CYA - 40
These were my test results this morning. My pool is only a few months old, so I have been using Trichlor pucks as my main chlorine source while the CYA was rising. I'm thinking its about time to stop doing that. Based on the above numbers I added 104 oz of bleach to get my FC up to 5.
My question is what to do with the PH and TA.
From looking at the pool calculator, if I switch to using bleach, then I need to lower my TA to 70-90. Obviously my PH is a little high and also needs to be lowered. Based on the Pool calculator, I need to add about 18oz of Muriatic acid to lower my PH to 7.6. I think I read that adding acid will also lower the TA, but by how much?
I have a SPA that overflows most of the day so I get a decent amount of aeration. I think this is part of the reason why my PH continues to rise.