I'm surprised either your convicts or your jewels haven't killed everybody else! You must have at least a 55g tank. You are lucky that the fish store took them. Most fish stores won't, just because Cons breed so easily. I have a single Con (a male, pink) that we keep in one of our African cichlid tanks. The last time we had breeders we had to euthanize most of them.
You should try Africans with your jewels. They are mostly mouthbrooders and it is easier to raise the fry in a separate tank if you want. You can also separate the fry from the jewel pair if you want survivors--it will make it more likely that the others won't eat them, or even the parents. I had jewels awhile ago but had trouble sexing them and they never spawned.
Thunders Mom--Congrats!