Oops... I should have listed what is in this hex:
Moss, schiffilara (unbrella plant), dwarf mongo grass, hardy fern, and fittonia, will all stand up to firebelly toads. The maidenhair fern is too fragile. Give the plant a couple of weeks to get estabished before adding toads.

The pictures were taken within a day of construction, before I decided what to add to it. It currently houses a pair for firebelly newts and 6 white clouds (fish). the water level has been increased to about a inch below the land.