Best way to add some quick chlorine without adding CYA?

[aylad]

Your best bet for a quick chlorine increase is bleach, but you can use the Cal-hypo if you dissolve it in water and then put it directly into the pool...once it's dissolved in the pool water it's no problem, but you do NOT want straight cal-hypo to come in contact with trichlor tabs--the result is sometimes explosive.

[Watermom]

If my CYA was 80, I wouldn't be using trichlor pucks or dichlor shock powder anymore. Both are stabilized and will continue to raise your CYA. Yours is high enough already.