I am in the middle of a project where I am converting a side by side refrigerator into an incubator. My design is based on the ideas shared here: https://www.backyardchickens.com/a/fridge-incubator with a few changes. I am using a small squirrel cage fan to force air circulation through the freezer side and back through return holes at the bottom. I have the fan installed but when I plugged it in to test it out it worked OK but I noticed it was kind of noisy. The noise is not outrageously loud but is definitely louder than the PC fans and such that I see being used on other home brew incubator projects. My question is: Will this noise and the small amount of vibration involved effect hatching? The fan seems to be working great otherwise and I want to stay with it if it won't adversely affect my future hatch rates with this incubator. Any ideas or advice will be appreciated.