Combining baby frogs with adults

[ZOIVII3IE]

I have 2 adult pacific tree frogs, and one baby thats about half their size. I'm very worried about putting them in the same cage, but the babies cage is pathetic and the adults is really nice. However I'm worried about adding the baby to the large cage because I'm not sure if the adults will eat the baby, and also because the adult cage has a large pond with a waterfall and I'm not sure if thats safe because the baby is really clumsy. Anyone have some advice on whether or not I can combine them?

[Kurt]

Large frogs do eat smaller frogs, so I personally wouldn't put them together.