the "tanks" is just a single terrarium that is divided with tree fern panels so that the microfauna can go between but the frogs cant. I probably would have designed it differently (with more of the terrarium exposed to the compost) but i ran out of tree fern. I could also see a series of tanks with false tree fern backs all hooked up to a large central compost bin. The ghost ants took up residence in the middle of the tree fern as well. All of the decor in the terrarium are tree fern pieces that are stuck together with the terrarium clay. There is a 1/2" diameter pvc tube that goes under the terrarium side to the compost side so that the water level is the same on both sides, all other cracks are sealed with terrarium clay. The terrarium clay was used to sculpt the water portion as well. There are lots of different plants in there. All were chosen for their relatively small size and slow growth, as the tank matures i will begin pruning and weeding and transplanting to get the shape i want. The plant in the upper right is Masdevallia wendlandiana and is a great warm grower that actually just finished flowering. Also have many small orchids that just kinda blend in with all the other stuff until they eventually throw out some flower spikes. All of the anthuriums started as tissue culture plants that needed to be rescued from contaminated cultures. I think there are about 4 different tiny philo species, begonias, ferns, melastomes....lots of miniature goodness that will soon be overflowing to another tank....
So the only false bottom is on the compost side and that keeps the bottom of the compost from staying too water-logged. The vertical eggcrate on the left side of the compost tank is to keep compost from falling down where i have the tube to my hand mister. The hand mister is just a cheapy from home depot that i ripped apart and stuck airline tubing on and then an airline filter on the end to stop debris from entering the pump. All watering of the tank comes from the resvior below the false bottom. In the forest epiphytes are fed by the decay and life that is stuck to the tree. As it rains the water seeps down through the collected compost and continually "feeds" the epiphytes with this fertilized compost tea. That is what i have attempted to do with the recycled water. So far so good. So in idea at least the decaying half feeds the living half, both the tiny vertebrates and all the plants. This is closer to how nature operates...we cant have life without death and decay. Every day the insect populations seem to increase on the compost side...started it off with about 20 melanogaster and now there is about the equivelance of 15 rocking cultures just cruising throught he rot bin....i can count about 20 flies at all times in the terrarium side and endless springtails and mites....