I would think that once they are separated and given a little time to de-stress and adjust, they'll begin eating again.
These guys have a lot of strikes against them in the feeding department. Sub standard care before is one, new environment is two, being housed together is three, and if all that weren't bad enough, it is the tag end of breeding season, and their hormone levels are probably still out of whack, making them less inclined to eat.
Get them in separate tubs, tweak their temps and such, let them have as much peace and quiet as possible for at least a week, ten days might even be better. Then when you offer them food, stick to smaller and more frequently for now. I'll almost bet they'll eat like wolves once you get their setups down pat.
Gale
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