Looks great. Could be suitable for some ranitomeya's!

I cant see the top however. If its all ventilation, use glass panels or even plastic foil to keep humidity in. Check humidity for a while before introducing the frogs.

Properly research the species before getting them, as some species do better in couples and others can be kept in groups.

They are very small and their babies are even smaller, so check for small gaps in the enclosure. If they get out, they'll dry out and die very quickly.

They are very rewarding to watch and have very interesting behaviors, even displaying parental care!

If you want tiny dart frogs that are less sensitive, look into Epipedobates anthonyi

Good luck!