The fertilized eggs will hatch in 2 - 3 days. You have to provide them the optimum temperature that is 21 degree centigrade. If it is necessary to increase the temperature then do so. If they are not fertilized then they will not hatch at all. And you have to take them out at any cost because they will start eating them. If you are not able to take them out then contact your local pet store for help. Details