A normal is a normal. Hets come from selective breeding. Spiders are dominant so there is no het spiders. They either are or they are not. A spider to a normal gives you 50% chance per egg that you will get a spider.

An albino(visible) to a normal will produce all normals that are 100% het for albino. Breed that het to an albino and you will have 50% chance per egg for visible albinos(normals will be 100% hets). Albino to albino makes all albinos.