Here's the deal. I currently have a bearded dragon, mali uromastyx (both living in big custom built enclosures), and a leopard gecko (who currently resides in a 10 gallon tank). I want to get my leopard gecko a slightly bigger tank. 20 gallon long would be ideal, but for the space open for him, I'll have to do with a 15 gallon tank (still much better than the 10).
So I'll have a 10 gallon tank left over, and I figure what better use for it than to put a 2-3 Fire-bellied toads in it! I plan on having a setup up about 50% land and 50% water (basically just having gravel that slopes out of the water, with some nice places to hide and such up there, etc. etc....I'm sure you guys are more than familiar with what I am trying to accomplish). Anyways, I want to know what kinds of filters would work well for this setup. I kind of have an idea in my head of what I would really like though. Ideally, I would want something that, after filtering the water, sends it out a small hose or tube, so that I could then arrange the end of that hose/tube at the top of a rock pile in a back corner of the tank, creating a small waterfall down to the water. Is there any sort of filter system I could buy/construct that could do this? What other filtering options are there?

