they will breed on their own in the tank. the breeders net is for the babies so they are protected from being eaten by the parents and other fish. just watch the females after about 3-4 weeks you will notice a larger belly and possibly a dark spot behind their belly, that is when you put her in the three way breeder to save the fry. you need to keep the fry separate for about 4 weeks or so till they are too large to fit in the adult fishs mouths to prevent them from being eaten.
good luck and hope you have fun watching your babies grow.
