you can sprinkle some flakes, but nature will do its thing you wont need to wory about feeding them. when they get a lil bit biger try brine shrimp and cruched up flake.
it usualy take like 2 days be for you see wigglers, and then another 2 days or so then you see them kinda swimin around like a air plane with no wings the kinda just twirdle around.
when eggs turn white they are dead, and the brown color is good, you can tell that theyre fertilized becuase you start to see little black dots forming inside ofthe egg, and if time goes by (a few days) and theydont turn white then you're in good shape!.
female will kinda push the male around a little bit but should get to outta hand.
and last but not least to sex a jag is easy. female are lighter, smaller,less agressive, and have the dash marks going down there bodies, males are more colorfull and the dash maks that the female keep, break up on the males and spots start to show up through out they're body.
hope this helps evryone and good luck with you're babies
From what ive heard if you disturb them too much they will either eat the eggs or not take care of them so when they lay eggs, dont disturb them for example walking by the tank more than you have to or water changes or anything like that...seems to be working for me 
GL with yours...
