A well-designed terrarium is essential for the health of your reptiles. This how-to video demonstrates the process of making a backdrop for your pet's terrarium. Start out by lining the aquarium with strips of bark. Then use caulk to secure them into place, and allow to dry for 36 hours. Apply eco-dirt to the bark, and then shake and brush off the excess. Watch this video pet care tutorial and learn how to build a backdrop for a reptile terrarium.