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Draining and starting over is really by far your best option. The copper from the Pristine Blue is what is causing the green hair and swimsuit. You may start seeing black or blue stains on your liner as it deposits there. You can use a regular dose of a phosphonic acid sequestrant to help control the copper, but it won't get rid of it.
Pristine Blue is not a sanitizer, and a pool still requires exactly the same amount of chlorine as if you weren't using it. There is no benefit to Pristine Blue and plenty of negatives.