Sorry, maybe got to you in the wrong way,
No offence ment

I did look the thread up, it was about 5,5 gallon tank,
There was also mentioned it was to small.
I looked up the size since We never use gallons .
The size I found was that of an aquarium, a 30x30x30 tank is a regular size as well.
As I said, it only has a purpose for raising offspring .

By most people, the 40x40 tank is considered enough, although it might pose problems when you have a dominant individual .
I always use a minimum of 60x40x40 cm, not sure about the gallons ,as well for the small species.

I found that the frogs will show more natural behavior when properly sized tanks are used.I think its nicer to be able to witness that then placing them in a to small tank just to be able to have more species.
When the tank is to small, sometimes it seems everything is working fine, just because they aren't able to maintain a territory , when you housevest them properly sized, they will start fighting.
This may seem ok, but it may stress them out, not creating and maintaining a territory .
They simply don't fight because the lack of room.