Regular water changes with dechlorinated water and a varied diet. I suggest, Microworms, Flake and Baby Brine Shrimp when they are <1". And once they are bigger - Bloodworm, Pellets, Brineshrimp, Krill..Etc.
Also keep an eye on the ones with Mum, she may begin to eat them after a certain length of time.
Remember to monitor your water stats (Ammonia, NitrIte, NitrAte) and keep them at respectable levels (0, 0, <50)