I just finished a hypo treatment for ich in my DT and I really don't want to ever do it again. But I do want to add more fish. I'm thinking about buying QT'd fish from Dr. Reef. But curious from people that buy pre-QT'd fish: do you fully trust that the fish you get are disease free? Have you ever had a suspect case of disease after introducing a fish from a pre-QT source? I'm considering observing the fish before putting in the DT, but seems like overkill and losing a lot of the convenience I would be paying for...