Well thank you for your input Chazwick! I agree and that is why my other tank will remain the "Serenity" Aquarium. I am not planning on adding 12" tall objects, or things that take up the whole tank. I am planning to creat a battlefield environment with the fish as the soldiers (i.e. schools of cardinals or neons), some that stay near the surface which will be the airplanes, and some large shell snails as like the tanks. I am going to use species that resemble certain aspects of a battlefield as well as making the landscaping look the theme, while mainly being their for the fish and other creatures survival and "play area!" I'm not going to stick a whole lot of sharp ended "toys" in there for the fish to get hurt on. That is another reason for me posting this thread, is so that I can get info on what do others feel would make a good "airplane" that will coordinate environmentally with the other aquatic life!