I'm getting ready to purchase an Incuview incubator. Am getting the distinct impression that I need a back up temp/humidity measurement device. Opinions? I live In NC. High humidity in general. Spring and early summer we have windows open so the house is generally at least 60-70% humidity! I'd imagine.. Anyhow, I'm starting in some breeds that need help and are more uncommon, and it would be heartbreaking to lose eggs. Thank you!