Captive Bred Reptile Forums UK - This is an excellent thread about creating an environment with bio-active substrate, with lots of pictures and details about how this enclosure was created, along with a cameo...
On the Web - The idea behind bio-active substrates is that you will have an entire eco system in your reptiles’ cage. The benefits from this are awesome. The natural good bacteria, microbes, isopods, substrate mites, and other insects that live in the soil, virtually act as a sanitation crew. Fecal matter can be completely broken down in less than a day. Even uneaten food items get broken down. Some of our cages have had the same substrate for close to 5 years without ever being changed or even spot cleaned. There are no foul oders or even any trace of fecal matter. It works so well that we may turn up a mouse or rat skeleton every once in a while (in the snake cages). The uneaten food items get broken down so fast that they never really have a chance to stink so they go un-noticed.
Read the full story after the jump!@ On the Web