As the title says I am lucky enough to have one tank as it is (I have a 60 gal cube with a 18 gal sump). I will be getting some new fish in my tank here soon. I would really love to have a QT tank but a QT tank to my wife is just another tank. So with the circumstances I am in QT is not an option. What is the best way for me to make sure I am not going to be putting any sick fish in my DT? All my fish come from SeaDwelling Creatures. I know they take good precautions on their fish but I want to make sure I am safe. I plan on doing FW dips on all my new fish but is there any other suggestions?