My pool is crystal clear and the overnight FC does not change. All drop test are normal except CH is 360
In the deep end I see a couple of spots that are brownish/yellow. These spots do not change when I brush them with a wire brush and do not appear to be growing or changing.
How do I differentiate between stains or MA? If stained how do I get rid of them?
In the deep end I see a couple of spots that are brownish/yellow. These spots do not change when I brush them with a wire brush and do not appear to be growing or changing.
How do I differentiate between stains or MA? If stained how do I get rid of them?