Well, you need to quarantine the female first for 60-90 days minimum. THEN you are welcome to put her in the same rack as your male...after she's finished with quarantine. When you breed them, you only need to put them together for 2-3 days at a time once a week in order to breed successfully. If I see a lock, I don't pair that female until the following month. If you don't see a lock, I pair weekly.