Hi everyone I’m brand new here so bear with me. I currently am trying to treat a scopas tang that had some ich. I’ve had him in quarantine for almost a week now and he has no visible white spots but he is still constantly scratching against the rocks which is something he never did even with the white spots. My copper levels read between 0.25 and 0.5 with cupramine. I’m not really sure what to do anymore so any help would be much appreciated.