I've been working on this for about four weeks now. It is a Medium Exo Terra. I used Great Stuff foam for the back ground with silicone to secure the coco fibre. I embeded some rocks into the back ground along with a branch to give it some depth. I glued on some sheet moss pieces on the back ground and sticks to add green highlights. I am using a Zoo Med 501 external canister filter to keep the water clean. The tube is behind a plant and goes up the right side of the tank. I carved a water fall into the GS and the return water from the canister comes back in at the top and trickles down. I have about 3-4 inches of water at the bottom. The background stays above the water line. I have two Turtle docks at the bottom to give my toads some land. They are easily removable when I want to clean. I carved a hole in the one on the left and put a plant in it. I also glued sheet moss on them for highlights. I carved out three holes in the GS background for plants. Then after I ran it for awhile I added the toads. They've been in such a boring enclosure for so long I hope they like this better.