I have a problem with my main tank, my scaled fish are dying off. I currently have my large zebra eel, a small moray, a blue dot puffer, a spiney puffer, a small lion and a kole tang. I had lost my queen angel to whatever this is, but I thought I had taken care of it with large water changes and running carbon. All parameters are fine.

The problem, well I checked on the fish last night, no problem, well i went home for lunch and looked in as the light came on. My kole tang looks like it was in a major street fight with Hulk Hogan and lost. He looks as thou he is peeling. Yeah like a sunburn. Just real ruff looking. As in the past with my queen angle and a naso tang, i'm almost positive it will perish too. Like i said almost overnight they drop off then die. I at my witts end. Almaost ready to say ____ it!!!!!! Any help appreciated.

Like I said it affects the scaled fish only, everything else is fine...or so it seems.