I do have cuttlebone in there. I will sprinkle with some calcium next time I feed them. 2 inches of soil, yes. I have seen some burrow down in the soil, but didn't see any eggs. I am hoping during next weekends cleaning I will finally see those eggs I want.
How small are the eggs?
They are about the size of bb's and will be in a clump of 50-100, you won't be able to miss them. Be careful whe you search through the soil, its best to preserve the clump. If you aren't careful the clump will fall apart and you will be picking individual eggs out of the soil.