I am embarrassed to admit that we do not yet have a QT. Can you all give me advice on where to start with setting one up? Currently we have a 75 gallon tank with fish, live rock, a few crustaceans, mushrooms. We also have a 40 gallon tank with 3 GSP, 1 Porcupine Puffer, live rock (These will all be moved to a larger tank as we're aware the porcupine needs at least 100G). The fish, rock, etc from the 75G will be moved to the 350G once cycled. Do we use the 40G as a QT and if so, how do we keep it cycled?