Has anyone ever tried to plant grass in the enclosure?

[DeCula]

If you have the correct amount of plant matter than your tank will become its own ecosystem. I have a 20 gallon tank with about 5 different plants growing so big they are pushing the top off... inside the tank is 7 pacific tree frogs, 2 firebelly frogs, 4 firebelly newts, and a barking tree frog....as well as ghost shrimp and guppies.....i havent touched the tank in 3 years and everything is crystal clear and all are fat and happy.

That amphibian tank sounds quite interesting, I would love to see some pictures and hear some more about it. If you are so inclined, it would be much appreciated! I really like frogs, and always had a huge interest in enclosed ecosystems. In fact, I'd really love to design a self-sustaining (or as close as possible) enclosed ecosystem on a large scale, and I'm sure your personal experience would help out a lot.