I have a tropical enclosure ready and wanted to know how to adapt it for an atb. The tank is a 55 gal 100cm x 40cm x 50cm tall. It has a lava rock drainage layer, the substrate is a mix of eco earth, coco fiber, black earth, fine tree bark and spagnum moss with a layer of leaf litter on top. There is only 1 plant, a devil ivy. I also want to know if these pieces of wood are ok Should i add more wood or are these 2 pieces enough? What should i add/remove/change?