I don't really have a dedicated breeding setup, per se. Once I move and have to consolidate all of my tanks down into just a few, I'll have it a little more organized, but for now I just move things around as needed. For example, with some of my guppy fry, instead of isolating them to their own tank, I just let the mother give birth in an already running shrimp tank, and i'll leave the fry in there for a month or so before moving them somewhere else. The most important thing to have when breeding is several tanks.