I have always just used topsoil for the plants that will be in my chameleon cages. Is there another method though? I sort of tired scrubbing the dirt stains on the cage floor after just 1 day. It also worries me if a feeder goes and drinks some of the water, before it drains out of the cage, and gets some type of parasite from the dirt. Is Hydroton a possibility? Also is that water crystal stuff another possibility to plant my plants in?