You can also put a bottom (AKA large flower pot) and hiding tubes (3-4" PVC pipes) in a cage with 1 male and 5 females. They will breed in the cage. When you get enough fry you can move the cage to another pool. You can also just leave them in the same pool and net out fingerlings when they get big enough to move to cages for grow-out. Green water helps with the fry survival. Juvies are cannibals.