Bangaii Cardinal fish Breeding help.

[BMahura]

I have a pair of maited bangaii cardinal fish and i am having troubles kepping the eggs alive. they have had eggs 4 times but i have still not seen any fry. i have tryed putting the eggs into a breeding net and still nothing. I have read about keeping the eggs in suspension but i do not know how to do this. If anybody knows what im doing wrong or can help that would be great. Thanks