'zebra' Snails - Breeding

[Aqua Marine]

I have had a couple of 'Zebra' snails which I actually think were sold incorrectly and given a incorrect name but either way I am looking to hatch the eggs but from my research I discovered that they can only hatch in brackish water. I do not have enough tanks to devote one to brackish water but wondered if it would be possible to put a heater in a container with salty-ish water to get the eggs to hatch and then move the babies back into my tropical freshwater tank?

Any advice on this would be great!