Quote Originally Posted by lilebelle
When adding CYA, how much will it raise the CYA in a pool??
You can use my bleachcalc for that, look under "other calcs". Generally all CYA is of the same strength (darn near close to 100%, if it's not at 100%) so it should work for you.


Quote Originally Posted by lilebelle
It appears that I am losing ~4ppm in FC out of ~5ppm added over a 12 hr period.
Yeah, you may have some nasties in there that need cleaning up. Could be from CYA degradtion.

Quote Originally Posted by lilebelle
Have been using bleach, but it kept dropping pH below 7.2
Woah woah woah, hold the phone. Bleach does not drop your pH. If anything, it will make it rise. Bleach has a pH of 13. If your pH keeps going low, something else is at work here. You wouldn't happen to be using Cl pucks would you?

Michael