Hello to everyone,
FC - 9
CC - 0
TC - 9
Ph - 7.8
TA - 180
CH - 600
CYA - 70
Pictures 1 & 2 are from 7/2010. The 3rd is from today when I used straight acid with the Jandy stain remover. I had to keep it in place for a few minutes while it siphoned about 1/2 gallon of acid onto it. It seems to have worked when pucks didn't. Does this mean it's a mineral stain, not black algae? Is there something I could use to treat the whole pool at once? Any advice would be appreciated. Thanks.
FC - 9
CC - 0
TC - 9
Ph - 7.8
TA - 180
CH - 600
CYA - 70
Pictures 1 & 2 are from 7/2010. The 3rd is from today when I used straight acid with the Jandy stain remover. I had to keep it in place for a few minutes while it siphoned about 1/2 gallon of acid onto it. It seems to have worked when pucks didn't. Does this mean it's a mineral stain, not black algae? Is there something I could use to treat the whole pool at once? Any advice would be appreciated. Thanks.