What size is the tank? If it is a 10 gallon or bigger...throw a cheap pump in that sucker and get some wtaer moving...it is the secret to a healthy viv. A waterfall turns your plain old viv into something that stops folks in their tracks...and it is simple.

I modified the method of Patrick at Saurian.net, and it works great, and is simple.

Maybe I should write a how-to. It is really simple.