cya 0 after nearly 3 1/2 lbs. stabilizer

[fullhouse]

i checked stabilizer this morning with my test kit and i show cya 20. this is more than a week after adding 3 1/2 lbs stabilizer. from reading on the bottle i think i should be up about 30-40. is it better to wait a while longer before adding more stabilizer. i have never had a chlorine pool so not really sure if sometimes it takes extra long for it to read.
ag 10,500 vinyl liner

[DavidD]

I personally would wait before adding any more CYA. At a level of 20 ppm, you should keep your FC around 2 ppm. This will give you some breathing room. Once you get your new solution, test again. In the beginning, I'd test for CYA every other week or so. It was really pointless as I was using only bleach so my CYA would never really rise. I now only test it a week or so after using trichlor pucks (if I've been gone for a week or longer) and at the beginning and end of each season.

[donfranko]

One benefit of pool stores is that they usually do sell CYA reagent. Useful when you need to test quickly and often. I think I paid $7 at Leslies last year.