I'm not sure if it's me or not, but my clown fish seems to have a very faint white powder on his eye and part of his body. He's acting fairly normal (swimming near the glass, eating, etc), but just wanted to check to see what it might be. I added a six-line on Sunday, but my levels haven't risen above .20 since the introduction. What should I be on the look out for? I have corals (hammer, frogspawn, xenia, star polyps) and all is well there. My new introduction also shows no signs of stress or physical problems. What do you guys think?