I am building an incubator out of an office fridge (https://www.backyardchickens.com/web/viewblog.php?id=72494-the-great-incubator-project) and was planning to use a fan out of an old computer that I had but I think the little 3 inch fan just doesn't have enough power. So I got this bigger fan out of an old overhead projector but got to wondering if it was possible to have too much air movement in the incubator.. I don't remember seeing anything about this in any of the threads I have read on BYC.. Opinions??