What is the best way to increase CYA? It is 55 and needs to be about 75. Other readings: FC=5.5 pH=7.8 Acid Demand=2 TA=80 CH=425 (tap water=100). salt=3300.
I plan to let FC drop to 4 and then add stabilizer but not sure what stabilizer to use. pool calculator says I need to add a quart of stabilizer.