Hi
I had an ich outbreak in my DT last month so currently I have all my fish on a 55g for QT using Copper power (~2.25) + nitrofurazone while all the fishes are doing well, eating well, I noticed the skin texture of my long butterflyfish nose seems unusual (photos below). My Tomini tang also has some red soreness on one side. Is this some diseases that I need to consider/ address? Please let me know, thank you.

I had an ich outbreak in my DT last month so currently I have all my fish on a 55g for QT using Copper power (~2.25) + nitrofurazone while all the fishes are doing well, eating well, I noticed the skin texture of my long butterflyfish nose seems unusual (photos below). My Tomini tang also has some red soreness on one side. Is this some diseases that I need to consider/ address? Please let me know, thank you.

