Planted Tank Guru
Join Date: Mar 2009
Location: Madison, Wisconsin
nice. this is a novel idea.
you know one group of animals that could perhaps be kept in a system like this are ants. obviously some types ants could do a lot of damage, but others might get along OK with the plants. i remember a while back seeing a Website for a company somewhere in Europe that dealt in really cool tropcial ants, like Atta leafcutters and weaver ants. the "ant farm" ants that you can buy form severla places mail-order i believe are harvester ants, which are the ones that live in the desert and collect seeds. there are probably lots of cool ants that one could look for in local environments.
i remember seeing an exhibit at a zoo that was something like this and featured live ants. they kept the ants in the display by smearing a greasy film (silicone grease?) around the rim.