Hey all, I have a main 55g tank and a QT tank. For the few weeks I had fish that I purchased and placed in the QT tank. The main tank had a fish that wasn't looking so hot...well I couldn't put him in the QT tank with fish already in there, so I decided to save the tank and euthanized it. The needs of the many outweigh the needs of the few is my thought. Did I do the right thing? Thoughts?