Personally when my FH breed i give the fry 2 weeks with parents give or take a few days. I then siphon out as many as i can and place them into 2 10 gallon tanks for probably a month as they grow. At the point i see some individuals gain size and aggression i place them into a 55g growout tank. And the next step for me personally is to attempt to sell the fish or they become polypterus food because i have way to many FH young.
Ben
Ben