Hey Jack,

In my experience the male will spawn with a few females in short succession so all the eggs in his nest hatch at about the same time. He'll guard the nest area until the young disperse, so plenty of artemia, microworms and then cyclops and daphnia should see them grow fast - especially if you carry out a daily partial water change to dilute the nitrates and pheromones that'll stunt their growth. If they grow quickly he may be ready to respawn in a couple of weeks if the females are ripe.

When I'm growing on fry I try to give six feeds a day and change 50% of the water daily.