Terrarium substrate...turning into a swampy wetland

[VooDoo]

So, if I do the drainage layer thing I'd need an under the tank heater?

[michael novy]

The heater is a good idea if your temps are a little lower than 72 degrees. Live plants such as philodendrons, monstera( small species), syngonium and pothos absorb alot of water. Plus the frogs will feel a little more secure if you use live plants. Just my opinion