Most of the commonly used terrarium plants don't do well planted in soil that stays continuously wet. We set up a false bottom tank and documented it as we went along, to see what we did follow the link. Naturalistic tanks provide some of their own food source. Look closely and you will see small insects and such climbing about. A tastey treat for a hungry dart frog.
Live plants help to breakdown pollutants in the tank such as nitrates.
They also provide many hidding places which surprisingly persuede your frogs to hide less. They hide less because they are more comfortalbe knowing safety is only a speedy hop away. A true bottom tank is the opposite of a false bottom tank. The substrate of a true bottom tank rests on the glass and is usually gravel or a similar medium. A true bottom tank is by far the easiest tank to set up.