They eat their eggs sack in the first 24-36 hours after they hatch and start wiggling around. Crush pellet food into a powder and then mix it with some water from your tank. Then suck up the food in a turkey baster and slowly squirt it at the babies. The mother and father are going to go crazy as they bite the baster. thats totally normal, just be careful you don't get attacked because bites from those two will hurt and drawl some blood. Parents sometimes don't eat for 1-3 days after the eggs hatch. Try feeding them some blood worm or finely chopped shrimp. Sometimes the parents won't eat floating pellets because that pulls them away from their young. But frozen bloodworm and finely chopped cooked shrimp will sink to them and then they will eat. Don't treat the tank with any medicines or salt as it will kill the babies.