my lutiano reds head looks dirty, she's been scratching, there's no other visable sighns at all and I've treated her for everything I can think of, she's eating great, and the water perameters are good, I even got a new test kit to be sure. I've done everything I can think of, and I'm stumped. This has been going on for a few weeks now. I feel bad for her, and I don't want her to be uncomfortable, anyone have any ideas?