That would be a better plan than just introducing one female, as established males and new world cichlid males in general are notorious for killing females (it isn’t uncommon for females to kill males as well) . Whichever species you pick I’d get some females that are quite a bit smaller than the male so they won’t try and challenge him for dominance and you can create hiding places the females can get into and the male cannot. This will help if you ever decide to use the hole in the divider method for spawning them
Thank you. This was very helpful!
Will a 125g be enough?