This is what I posted Last year (Oct/Nov 2020 I think). Had copper stains and used PinchAPenney Stop Stains to try to remove. After 11 days ph below 6.5 (maybe lower) got algae bloom. Stains reduced by 50-60%. Was advised to raise TA and PH and then shock pool. Raised TA to 100, PH to 7.2. Then was advised to add 5lbs shock. Water turned from cloudy green to mildly cloudy blue. Advised to add 1 lb shock and water turned clear blue. TA at 100, PH at 7.4, FC at 1.5, CC at 20+, CYA at 50. Calcium hardness at 395 and TDS at 800. I am using Taylor K-2006 Kit. Will CC go down by itself over time? Can I use breakpoint chlorination (raise to 10 times CC of 20+ or over 200ppm). How much shock in a 18,000 gal pool? Thanks JohnM
Was advised CC would go down by itself which it has, from 20+ to 9.8.
Current readings 2/22/21:
PH 7.4
TA 79
FC 0.2
CC 9.8
Calcium Hardness 314
CYA 89
TDS 800
18,000 Gal
Water Temp 55*
Previous stains Completely Gone
Water has been and is clear.
Was advised to add 10# baking soda and 1.5 Pt acid.
Then add 24 lbs of 78% potassium peroxymonosulfate to get rid of CC.
What do you advise?
Thanks, John M
Was advised CC would go down by itself which it has, from 20+ to 9.8.
Current readings 2/22/21:
PH 7.4
TA 79
FC 0.2
CC 9.8
Calcium Hardness 314
CYA 89
TDS 800
18,000 Gal
Water Temp 55*
Previous stains Completely Gone
Water has been and is clear.
Was advised to add 10# baking soda and 1.5 Pt acid.
Then add 24 lbs of 78% potassium peroxymonosulfate to get rid of CC.
What do you advise?
Thanks, John M