Deku, I just finished my fire belly tank which in the exact same size as yours just a little taller and with firebellies you don't really need height. I had a lot of fun using expanding foam and making my own waterfall and it didn't really cost that much. You can do a very elaborate background for less than $20 bucks. I also know that you are heavily into turtles so I'm sure you already have a spare filter sitting around you could use to keep the water clean. The only thing I would suggest is if you do a hand made background use the coco fibre instead of just regular dirt which you said you are fond of using in your setups. The coco fibre, believe it or not, is a very clean and uniform substrate and isn't that messy when you have water run over it. It's easy to vaccum up any loose particles just do it when its dry and you will find it easy. I bought the $10 bag and I used about a third of it so it doesn't take much. If you haven't tried doing something like this before give it a try. The foam cuts very easy with a knife so if you don't like something you can just trim it down and redo it the next day. Add sticks and rocks and have fun with it. The sheet moss I use looks like fine grass and make the hillside look real and adds color. Cut holes in the foam for plants and keep them in small pots so if they don't work out you can change them out. I put small peices of the sheet moss over the dirt on the plants and it keeps the soil from eroding if frogs or water pass over them. I used branches in my tank to give it depth but you really don't even have to do that for firebellies I just like the look. Any excess silicone easily scrapes off the glass with a new sharp razor blade so its easy to clean up anything you don't like. I also put a layer of black silcone on the back glass before I started so when I get bored with this setup I will just scrape it all off and start again. Its sometimes fun to go complex...have no fear and give it a try. The supplies are inexpensive so why not do it? Check out my picture of my new FB tank in my photo album and look at others not just on this website but there are many other sites with fantastic pictures for ideas and info. Google : terrariums, paludariums, ripariums, vivariums, aquascaping, aquatic plant supplies, and anything else along that line and you'll be amazed. You'll never go back to dirt and water bowl as we all seem to start out with.