If your eggs still haven't hatched yet, I suggest making your own post in the Tiger Barb section of the forum located here:
and ask for help.
But first, why don't you go on by the "Welcome to FishLore" forum and say "Hi" to everybody.
Use a quarantine tank that is cycled, and if you have any antifungal meds, you could try and use those. It helps keep the eggs from getting a fungal infection that could kill the eggs. I'm not too sure about how it happens, I work mainly with livebearers, but the eggs might turn a nasty white color and probably develop a velvety fungus. Not a good thing.
within 2 days they will look like shards of glass and within 5 days they are free swimming. I needed a magnifying glass to see mine. I fed banana worms at 6 days. I have a well established tank with lots of live plants for infusoria. It works well for me.