Can i add another whites tree frog?

[Zosime]

I have a 18x18x24 exo terra. I currently have only one baby in there so i was wondering if i add another one will it be ok id be adding another baby? Also would they make that croaking sound at each other? I here mine croaking in the morning but it only does it acouple times and id like to here them like talking to each other and what not?

Thats the enclsoure i have

[Bombina Bob]

Hi there
You can fit three to four babies in an 18x18x24
or you can fit a max of two adults in this tank.

[Mentat]

Please read this before you add more frogs to your enclosure: Quarantine. Thank you !