I can rebuild a pool blindfolded, but maintenance & chemistry? Forget about it. Hoping to learn a thing or two here.

My Dad has been fighting green water all summer. He's doing what the stores tell him. Not working. Stopped by last night and you couldn't see a foot down.

At the beginning of the year, his town changed water treatment from chlorine to chloramine. Don't know if that makes a difference.

Here's his latest test results;
Saturation IDX - 0.5
TDS - 700
CYA - 100
Tot. Chlorine - 7
Free Chlorine - 7
pH - 7.7
Total Alk - 110
Adj Tot Alk - 80
Tot Hardness - 380
Copper - 0.5

It's a free form kidney in ground plaster pool. Traditional sand filter. Approx 24,000 gallons.

Any help would be appreciated.