The incubator I own has auto humidity control hopefully as long as it starts with enough thermal mass and enough start water the unit should replenish what is lost to evaporation. At least that is the idea I have read a few instructions and I think I am going with super hatch as I can get it easily and it has thermal mass that should help with any variations in temps. I really appreciate the comments and ideas, I like the crate method a lot it makes a lot of sense for a larger incubator than mine. If everything goes well and I find myself with more time I will likely build a larger one and use this method. Again, Thanks !!