Interesting... I thought you would need more stability. So just a small hyjack if you are using egg tubs do you need an incubator at all?

I don't see that much variation in hot spot or cool spot temps in any of my enclosures. Could I flatten the gradient to 88.5 and raise the ambient air temps to the same and just use an empty enclosure? I likely would only have a degree up or down shift in temps ? I could likely reduce that with covering the vents some.