lobster eggs

When you say lay eggs. Do you mean one of your lobsters are carrying thier eggs under thier tail?
 
It's going to take about 28 days for the eggs to hatch. In most species the fry will hatch fully formed. They do however moult within the first 24 hours. They eat the same things as the adults only smaller versions. Mothers are usually good parents.

Also I'd take the father out.

Check Shrimps, Crabs, and Crayfish for more information.
 
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