My week has not started well at all, don't comment here, but 2 weeks ago I bought a beautiful black female scalare angelfish. However when I acclimatized it I realized I had a bit of velvet and it would not enter my tank in any way, so I put it in the observation tank that I have for somewhat delicate fish, I gave it a bath with cupramine and I entered it into the tank confident that the feeding that I give to all my fish would simply make her eliminate the disease by herself, it was not like that and a couple of days ago I began to add cupramine in the tank, I followed the instructions and today I just see a fish completely deteriorated by copper, she is breathing hard, she cannot swim and she is simply dragged by the flow of water, I have made a water change of 75% and I have increased oxygenation hoping this will help. I took this female because it is black, I have rarely seen such an angelfish, a size of approximately 5.5 ". This problem is linked to my gold striped clownfish (Premnas biaculeatus), who is already 21 days with Cupramine in a hospital tank, fighting velvet too, and while he eats and looks healthy, velvet has only disappeared by about 80%, he refuses to disappear entirely. On a separate note, I can't find my beloved blue damsel (Chrysiptera cyanea), I'm afraid she has passed away, I can't find her body but I know she doesn't have good company, because my flame angel (Centropyge loriculus) is a beautiful fish but it is an unpleasant, very territorial and aggressive guy. Either way, I have 3 problems now and hope that at least one ends well.