iHerp Australia Issue 7 | Page 25

cover? These are all important factors to consider in your enclosure design and will ultimately determine the type of substrate, plant species and other furnishings (such as logs and branches), as well as temperature and humidity levels of the system. Enclosure. To achieve a bioactive system, purpose-built glass reptile enclosures are generally the most suitable option as they have easy front access, adequate built-in ventilation and come in a range of shapes and sizes suited to terrestrial, arboreal and semi- aquatic species. Glass reptile enclosures are usually waterproof to a certain level and are good at retaining humidity and moisture. Re-appropriated aquariums can also be converted to bioactive systems, however lack of front access can be problematic, making it difficult to maintain and service the system solely from the top. The size and configuration of the enclosure will be dependent on the species-specific requirements, as well as the number of animals being housed. 1. Substrate and Drainage. The success of a bioactive system is dependent on its foundations - the substrate layer. The substrate in these systems will become a living, breathing entity of its own, supporting organisms capable of breaking down the waste of any reptile or amphibian inhabitants. In a fully thriving bioactive system, one rarely has to remove waste or faeces from the enclosure, as these invertebrates should do much of the cleaning for you, just as it would take place in the wild. It’s amazing to watch reptile or amphibian poo get completely broken down and disappear into the soil in as little as 24 hours! 2. First attempt at a Bioactive System! 1. With drainage layer and mesh installed. 2. Note use of rocks as ‘retaining wall’ in LHS 3. back corner. 3. Selecting the plants is the creative element! 4. Almost a year later. Without the framework of the enclosure being visible, this is reminiscent of a lush, natural tropical habitat! All images courtesy Ben Dessen.