ReptiPro 5000 Egg Turner

I was pleased to find an egg turner that fit into my styrobator, comes with a standard house plug. No assembly, just plug in. I was concerned that it vibrates as it turns and have no idea if that may hinder the development of eggs. The reptipro turner has a very low hum, but that did not bother me. I have used it wih one hatch so for, but my eggs turned out not to be fertile.