Spider is dominant. There is no such thing as a het spider.

When you breed doms by normals, the ODDS* are that you will be get 50% morphs and 50% normals.

The normals are normals and will never be anything but normals. They are not het for anything.

*Remember, this is a game of chance, just like flipping a coin. You could just as easily get all normals or all morphs. Pray to the morph gods!