Hello, so lets start from begging. We got terrarium for a week now, its runing without any creatures, just waterfall , plants, rain system and hot spot lamp ( canopy with normal lamp will arrive Friday) .
Seller set up terrarium for us, and used clay balls on bottom and ECO Earth on top made from Coconut Fibre. Now I got two letters from my friens, saying that in Coco fibre nothing will grow as its bad nutrition.
So there is set up :
http://imageshack.com/a/img62/8845/w8km.jpg
There is a layer of Clay balls and Eco Earth :
http://imageshack.com/scaled/800x600/21/yo98.jpg

So will have couple of solutions, just need your advice please.

Solution number 1 : Dig eco earth in that places where plant will be and use Orchid mix + peat to fill base around plant potting place and just cover top with eco earth, us it stops substrate goes to frog skins (heard peat moss will stick on frogs).
Solution number 2 :
Plant plants in pots using some substrate inside pot only.
Solution number 3 :Get rid of all Eco earth and do it everything from start
So as you have more experience, please help to solve it .