i did buy a circulation fan for my lg bator, and it has made a difference so far. the temp still varies a tensy bit here and there but the humidity seems to be a lot more stable. i put some of my own eggs in there for testing, but i thought i'd let the ones of ya still on the fence about the fans to GET ONE!!! i did order another for my other lg and will be ordering another egg turner to. then i can order some hatching eggs from you pros!!