So I took a closer look at Plato (the orange clown) this afternoon and he has some marking on his skin that kind of looks like Brook (at least from what I’ve gathered from forum posts, pics, etc). Unfortunately I don’t have a QT tank at this time. A little out of sorts on what to do next. How likely is Brook to infect all the fish in the tank? I know it is called the clownfish disease. Are other fish more resistant? I read that formalin is reef safe. Might have to pick some up and just dose the tank.