You could use this as a quarantine tank for them while you get a bigger home setup for them.

Sorry sometimes we provide less the great answers. Buying a new tank is costly, but in the long run your frogs will be happier which is ultimately our goal

I do like that you came on here asking to make sure instead of investing a lot of money and then finding out. I always love seeing new to the hobby peoples who want to know as much as they can before they dive head first into it