My pool is 25,000 g. My most recent reads (from yesterday) are as follows:
- FAC 3
- TAC 3
- CH 210
- CYA 100 (High)
- TA 110
- pH 7.4
- Phosphates 1000 (High)
Today my FAC is 0. I cannot get the free chlorine to stick.
2-3 weeks ago, when I realized CYA was high, I stopped using tabs and chlorbrite - now using bleach, and a lot of it!
I've attacked the high phosphates with PhosFree, with no change in the reading.
One last thing, I have not changed out the sand in my filter in 7 years - probably an issue!
Pool is crystal clear, I'm just having to put a lot of bleach to it.
Any suggestions? Thanks.