Hello i saw some white spots in my purple tang amd a butterfly fish. The spots were not big for ich and not intense like velvet . I decided to do cupramine in my DT 220 gallon . After 6 days of copper i still see spots on those fishes . No other fishes has that symptoms all fishes are healthy except a chromis died without reason after adding copper.can anyone id ? I also had a hippo tang no symptoms on it.