Vivarium Designs needed

[Xquirrel]

I have a small vivarium, but it looks refreshing.
I use frog moss as surface substrate, coco bark as middle and stones as bottom substrate which are submerged to water.
The middle part is a "river" which i keep some neon tetras in it.
One thing i should pay attention to is the frog moss that needs quite much sunlight, so i use uv lamps sometimes.
Also, I use fogger to increase the humidity in the tank.
The frog in here is Hong Kong Whipping Frog - Polypedates Megacephalus