So my clowns scratched from day one hippo is now scratching and so is gobie. I've treated with prazipro because the clowns where focusing on scratching gill area. I see no spots what so ever on any fish in tank. All are eating good very active. They all look great. I have had the clowns for a month and the gobie for a week and the hippo for 4 days. No qt tank yet working on it. Any suggestions.