I am wanting to hatch some eggs one of these days. I seen someone that had a incubator and a hatchery. Most seem to just use the incubator. How does it work, I mean with auto turning trays do you have some that don't turn that you place the lockdown eggs on, or is there a 2nd unit that is a "hatchery" that you can place the lockdown eggs in to hatch. Thanks for the info.