Pollen in pool?

[madwil]

If your FC stays constant overnight, it is not algae; algae eats a lot of chlorine, and it will show on the overnight test.
in the meantime, you need to assume your last CYA test (if since any addition or refill) is the same now, and maintain FC according to that CYA number...
I get a lot of dust/pollen in my pool, just means I have to vacuum...

[Watermom]

If you get a CC reading of 0, that is good. Zero is ideally what you want.