Beautiful pool water turning blond hair green!

[Fiveattripp]

I don't have any stains in the pool. The only problem is that my precious grand daughter's blond hair has green highlights when she swims. The calcium hardness was very low. I did bring it up to 200. I ordered a copper test kit. It should arrive today. I also ordered some metal out. After reading the directions on that, I'm not sure I should use it. I want to make sure that is will not harm my salt system. It really isn't clear as to how it works on the bottle. Anyone have experience with this kind of product in a salt system pool?

[waterbear]

to get rid of the green in her hair mix 2 tables spoons of photographers hypo (sodium thiosulfate, available online from many retailers, including walmart and amazon and sometimes sold in pool stores as 'chlorine neutralizer') and 2 teaspoons of citric acid (Sometimes available in the grocery spice section as 'sour salt or with the home canning supplies) a cup of warm water and pour through the damp hair. Let sit until green is gone (usually less than a minute). Rinse well, shampoo twice, and then condition. Besides knowing a lot about pool chemistry I am still licenced as both a cosmetologist and barber and worked many years as a colorist so getting rid of copper green hair is something I've done often!