Posting for a friend pic attached
15k pool
3 years old
Never manages cya chlorine was more and more tablets with high circ rates
Cya is plus 200
Ph was above 8 for a year but 7.5 now
TA is 50
Was lower before I told him to add baking soda
He added 64 oz of the frog brand algicides last summer and I told him stop he loved it.
Because of his high cya he had algae issues.
He is starting to get spots on the bottom of pool not sides that are bluish in color. He scrubbed with a chlorine tablet and no change supposedly eliminating black algae. Is the pic attached copper stain and what’s his remedy?
15k pool
3 years old
Never manages cya chlorine was more and more tablets with high circ rates
Cya is plus 200
Ph was above 8 for a year but 7.5 now
TA is 50
Was lower before I told him to add baking soda
He added 64 oz of the frog brand algicides last summer and I told him stop he loved it.
Because of his high cya he had algae issues.
He is starting to get spots on the bottom of pool not sides that are bluish in color. He scrubbed with a chlorine tablet and no change supposedly eliminating black algae. Is the pic attached copper stain and what’s his remedy?