Hi, welcome to TFP! The only way to remove copper completely is to drain the water and refill with copper free water. You can use metal sequestrants if you are in an area where draining and refilling a pool is a problem, however you will need to stay on top of the sequestrant use to prevent staining of your pool surfaces, light colored clothing and hair. Have you been using copper based products or mineral packs to maintain your pool?
Edit: If you already have stains on the pool you want to get rid of an AA treatment will take care of that, but it should be done prior to draining and refilling the pool.