CYA help please!

[BigDave]

If you have a supply of trichlor tabs and the trichlor is maintaining adequate FC, you might as well just use the tabs until you get your CYA where you want it then switch to bleach (liquid chlorine). Keep an eye on pH because the trichlor will cause it to drop and your water's already at 7.2. Raise pH with borax so the TA won't climb.

[CarlD]

To give more detail to Big Dave's advice (which is sound), I don't like CYA to be below 30, and generally don't like it to go over 50, because there your maintenance level of FC is 3 to 6 ppm. But, if you find at that level of CYA you are adding chlorine all the time, then by all means raise it to the 60 to 80 level and maintain FC at 5 to 10 ppm.

[macox126]

Thank you sirs!