Oh yeah I think that junglemike is Michael Lo. I was just on his site looking at some other stuff... http://ibanorum.netfirms.com/
I like the idea of tiers. A setup for crypts might be pretty easy to make with tiers using just simple cutouts of pink insulation layered up to make different 3D shapes and then shaped a little bit for rounded edges. You could even make the water flow from one pool to the next with notch cutouts in the edge of each. Each pool could have a nutrient-rich topsoil substrate with gravel or sand cap.