I currently use a GQF 1588 incubator and it works great. I'm thinking about buying another incubator to use as a hatcher. Since the 1588 is circulated air, does the new hatcher need to be circulated air too or can it be thermal air? Of course the thermal air incubators are much cheaper which is always nice, but I don't want to lose my eggs at lockdown just because I went from circulated to thermal. Thanks for any help.