Hi guys i have lost approx 9 fish due to what I believe was Velvet and caused by the last fish I put in which was a Powder Blue, anyway I have ordered a new tank and was going to go fallow for 80 days but I have one Damsel left who has survived and looks totally healthy, could he have been the culprit? what can I do with him could I put him in QT without medication then after 80 days put him back in the main tank?