Same occur to my percular clown also, no treatment implement, but must made sure the the water para is appropriate and every week the water change. The seafood will treat by itself. For my clown seafood, it took about 3weeks completely treat. Wish this helpSame occur to my percular clown also, no treatment implement, but must made sure the the water para is appropriate and every week the water change. The seafood will treat by itself. For my clown seafood, it took about 3weeks completely treat. Wish this help