A q tank (yeah my spelling too) is used to isolate your new fish so they wont give anything to your established, healthy tank. For this you need a seperate tank. Medications should be given only to the sick fish in this smaller controlled enviroment. Kind of like a hospital.
It sounds more like you want a refuge. Not one like under most of our tanks put there just for macro, but a nice pretty one that sits next to your display. They can share the same water or not. That shouldn't matter for a while with breeding.
A few months ago someone did a great "clown breeding 101" on here. You should search for it. I think he covered everything in it.