My adfs (Oingo and Boingo) are in my 2.5 gal with my new halfmoon. It's been a real challenge to feed them because they were initially in the 5 gal with my veiltail Baccus and he ate every bit of their food.
The halfmoon seems less interested in eating their frog pellets but I have to change out the gravel because he rocks are large and the frog pellets kind of get lost in them. So, I've been taking a turkey baster and squeezing thawed bloodworms in front of them. This seems to be working ok but the halfmoon loves them too.
Just something to keep in mind if you experience the same with your froggies. If I come up with a foolproof method of feeding them, I'll post it here.