Hiya mate.
If I find any viv raised froglets I typically leave them in the viv for the simple fact that I'm terrible at catching frogs nevermind miniscule freshly morphed ones.
I left 2 viv raised Imi froglets in the adults viv (only 12x12x18 Exo) and they have gotten along just fine until this past week (now about 5months OOW).
Now that the juvs have gotten to competing size to the parents, the adult male has been fairly aggressive to one of them in particular so I have removed them to a froglet grow out tubs.
The only problem that most have with leaving freshly morphed froglets in the viv with their parents is the matter of competition for food.
Many feel (and rightfully so) that it is best removing them to a smaller growout where they can feed without the added stress of the adults guzzling everything.
Best regards,
Richie