yes it is but remember that they will hatch a day latter, so you need to make them well marked so you know which is which, you can do it up to 3 days tops, but you also need to remember also that you will stop turning all eggs at the same time so you don't need to have to 'bator open, it will not hurt to stop early, any dried chicks will need to be remove as soon as possible quickly, so the eggs that are left are not kick around to much,