As Home Simpson would say ... "D'oh"
I listened to the kid at Leslie's who, when I told him my water was turning a little green, advised a copper algaeside, and I already added it to my gunnite, chlorine 25,000 gal pool. My wife and kids and I all have brown hair. We have a tahoe blue quartz finish. Are you saying it could stain the pool? Only added 10 ounces.