I went and bought a waterfall system, and just layered rocks along the entire bottom of the cage. Its going to be a hassle until I get something like you were saying though, seeing as how I'd have to replace the dirt and upper layers and clean the rocks off quite frequently- until I get the other setup, how often do you guys think I should clean the rocks off? The waterfall keeps the water in the pond area moving but I don't think it really makes a difference to the water around the rocks under the rest of the cage. Here's a photo (Its pretty bad because I used a camera phone but you get the idea):

How do you guys do water changes in a setup like this? I've always just had a water dish, could I use the pump to get the water out to clean the rocks??
My frogs do seem a lot happier, they've actually been swimming and playing in the water a lot. In the back the water is very shallow and they love to sit and soak there.
Also, I'm really wondering about something weird that happened this morning, take a look at my question in the tree frog section if you feel inclined:
http://www.frogforum.net/tree-frogs/...ree-frogs.html