Corey- it is pretty simple, none of the frogs has similar growth rate as a horned frogs and african bullfrogs, they double, triple, etc their size/weight in a matter of weeks to the point that one day you have tiny 1" baby, 3 weeks later the baby is over 2" and in 1-2 month the baby is not a baby anymore and you can"t comprehend when did that happened. In order to grow this fast they need insane amounts of nutrition and supplementation, including Ca, however it all has to be balanced, thus dusting every other day and always gut loaded crickets( dubia) or worms, etc. I always gut load crickets for 1-2 days before feeding off.
and i agree with Carole too, with frogs as with exotics in general there is so so much unknown, no matter how much you know, no matter how experienced you are, you are still constantly learning something new. Talking of which, Grif, I'm looking forward to read that article too.
Lovenokia - don"t panic

as i said before do not dust crickets yet, offer them plain and simple, same size as he used to eat before tonight again, and the next night, these little buggers sometimes just love to test our patience, I'm sure he"ll come around.