what i use is a 20 gallon with a sponge filter a few pieces of pvc pipe for hiding and thermometer and heater this is all you need when I first set the tank up for 1 month I put a piece of live rock beside the sponge filter so it will get bacteria and all the good stuff then I add pvc a elbow or 2 and just a basic light on it on for 12 hours off for 12. If I have to dose any meds there is nothing but the fish in there so I can't hurt any inverts. Now if your QT a invert and coral that is a whole different game a bit the same just a few differences good luck
mr.reef24