I put mine in around 99.5 every year. Humidity is really really important, shoot for 70%. I've experimented a lot with turning, and honestly, I've had equal luck with turning them once a day, three times a day, or once every other day even. I do recommend an odd number though, that way they switch sides each night. I also have an automatic turner, which is really nice, although a little pricey, and you have to be careful about taking them off and setting them nice before they hatch. Three or four days before their hatch date stop turning them, so the chick inside can get oriented. It's also important not to help them with hatching. The most I do for them is, if it's been more than 6 hours after they make the first air hole I enlarge it a little. I have had some hatch with egg sacks still attached. If it happens, put them in your brooder or tank in their own container to stay away from the other chicks on slightly damp paper towels, and leave them be. They don't always make it through that. If you have any questions feel free to pm me, I've got tons of experience with hatching and raising chicks.