I have one tank that is acrylic...the biggest problem that I see with acrylic is that it does scratch. I personally like the glass better for terrariums. Although I had a 75 gallon reef tank and I preferred the Acrylic with the smooth curved edges and it doens't have a color tint like some glass tanks can. Thats my two cents. But yes.. sorry.. you are going to be entering the contest. Besides you could use a misting system. Remember the contest rules...you don't have to be finished with your project. You've got three weeks to plan out your design and make a thread. I would like to see drawings and dimensions. The layout for the bottom, filtration, water features, etc, etc. What type of frogs are you going to be putting in there, what type of background, the materials your using for your backgound, the type of plants (with names), mosses, what type of lighting, misting sytem, ....hmmm anything else. You've got a lot of work to do. Better get busy.