I have an aggregate surface that was installed last May. I have developed black algae spots on the walls and floor and I am currently treating with an algaecide (also brushing and keeping chlorine level high). I have noticed these white spots forming on the pool walls that can easily by scraped off with a plastic putty knife or even your finger nail. They are typically below the water line. This is the results of my last test:
Total Chlorine: 3.0
Free Chlorine: 3.0
pH 7.4
Alkalinity 90
Calcium Hardness 325
Stabilizer 60
Total Dissolved Solids 2,000
I am using Chlorine shock and tabs also adding a sequestering agent to prevent metal stains.
Total Chlorine: 3.0
Free Chlorine: 3.0
pH 7.4
Alkalinity 90
Calcium Hardness 325
Stabilizer 60
Total Dissolved Solids 2,000
I am using Chlorine shock and tabs also adding a sequestering agent to prevent metal stains.