Just bought a house with an inground vinyl pool, approx 33,000 gallons, previous owner used chlorine tablets, water looks clear. Found this sight, started reading, ordered the TF-100, and results are:
pH: below the lowest color, so <6.8
1) So my 4 kids really want to swim...is the water safe?
2) The pool math calculator says to replace 58% of the water to get the CYA down. Will CYA come down on its own over time, or is replacing water necessary?
3) Assuming the high FC will come down over time if I'm not adding more chlorine...is that correct?
4) pH seems off, but maybe due to high FC?
Thanks for any help!