Good Morning! I have a Brinsea mini adv. incubator and it is small. It constantly reads out the temp. but I have no idea what the humidity is in there. I looked for hygrometers on Ebay and they don't seem too expensive. They were the digital ones. My question is do you place the hygrometer in the incubator and just leave it there or do you get your reading and take it out. Doesn't seem like theres enough room to leave it in all the time. What type of hygrometer is best?