Hets only provide genetic confusion if you do not keep track of their lineage and children. If they are 100% het ghost, and I hope you got a guarantee from the breeder even though it takes time to prove, you WILL have 2 animals that each have a ghost gene. Unfortunately, if you breed them to each other, their normal babies will only 66% chance for het and not 100%, but hypothetically 25% of their children will be ghosts! Just be persistent, and set yourself a number of clutches where you might give up assuming they are hets. (although, you could have 100% het animals and never ever produce a visual, the odds are just very low).