New to frogs, first attempt

[DirtyBird]

Hi guys, first off I wanted to say thanks for the great advice and cool ideas here.
So this is my first terrarium/viv. I have ever made, and I wanted to know what you think, and if I need to do anything different. It houses 6 Fire-bellied toads (bombinas orientalis?) I tore apart 2 of my custom computers and made a vent system, and use peltiers to cool the tank. It sits about 75-82f, which is better considering my apt sits at 87 cause I dont have AC.
This is an over all view. It is a 20L. Full spectrum light.

I have about 3 inches if water, which is circulated through a pump, and dripping over the land part which is eco-earth and moss over aquarium gravel, as kind of a natural filter

I used river rocks to hold the substrate back, and act as a catch so less goes all over the water. There are several live aquarium plants, but I dont remember what they are off hand.

I also have a repti-fogger to keep it humid as needed. I wish I could get it to settle at the bottom, instead of floating everywhere.

Fake log and hanging plants look good.
The eco-earth sits about 1/2inch above water line, but is always soaked and I can't seem to get it to dry out at all. I have a 'unique' venting and cooling system for it.