Yeah, that's one thing I don't really know yet. I know that some of mine seem to fill up with eggs very quickly, while with others it seems to take a week or so to gt large enough to notice. But, this is a lack of experience talking! I really would try them again, because if a pretty large momma can fit as many eggs as mine did, I'm pretty sure they can be quite small and still have a lot. I wish more people would respond on this. I am interested myself. I would also give them longer than an hour, I know that Jaded once told me that it took one of her pairs 3 days to spawn once! Maybe yours will just take longer. As long as he isn't being aggressive, I might even leave them overnight, or all day if you can.