I am working on putting together a 75 gal all male peacock/hap tank. Currently, I have 2 male and 2 female ruby reds growing out in a 29 gal tank. They are each about 2 to 2 1/2 inches. Would the 29 gal tank be big enough to leave the two females and one male in it as a breeding tank? Ideally, I would like to add a third female to this group. They would be that tank's only inhabitants. If the 29 gal is to small, what would be the smallest tank I could use to house a breeding trio?