ExoTerra vivariums are a popular choice among reptile and amphibian enthusiasts, offering a functional and aesthetic design for housing a variety of species. However, many hobbyists face a common issue when it comes to the standard ExoTerra enclosures: they are not fly-proof, and the mesh top often allows too much moisture to escape. This can lead to lower humidity levels, which is problematic for species such as dart frogs, which thrive in a moist, tropical environment.

A conversion lid can be useful where a standard Exo Terra mesh top loses more moisture or feeder insects than desired. It is an optional enclosure modification rather than an essential step, and the final vent area should be matched to the species and room conditions.

Why Convert Your ExoTerra Vivarium?

The ExoTerra vivariums are well-constructed and versatile, but they were primarily designed for reptiles that may not need the high humidity levels required by some amphibians, particularly dart frogs. Here are the main reasons why converting your ExoTerra vivarium with a Conversion Kit is beneficial:

1. Retain Moisture for Bioactive Vivariums

Some highly ventilated enclosures dry faster than desired in a particular room. The answer is not simply to seal the lid or chase a constant high RH number: adjust ventilation, water input, leaf litter, planting and room conditions together so the intended species has suitable humid refuges and drying cycles.

Replacing part of a mesh top can reduce evaporation. It does not ensure optimal humidity or guarantee better animal, plant or microfauna outcomes; re-measure temperature and moisture after any ventilation change.

2. Create a Fly-Proof Environment

If you’re keeping fruit flies or other small feeders for your dart frogs or other vivarium inhabitants, having a fly-proof enclosure is essential. Unfortunately, the mesh tops on ExoTerra vivariums often have gaps large enough for these tiny insects to escape. This can be frustrating and unsanitary, as escaped flies can quickly become a nuisance in your home.

Upgrading to a fly-proof lid ensures that feeders stay within the enclosure where they belong, reducing waste and mess, and keeping your vivarium environment controlled and secure.

3. Improve Temperature Regulation

A more closed lid can alter heat retention as well as evaporation. Dart frogs should not simply be kept ‘warm’; measure the actual temperature after modification and avoid overheating or reducing ventilation excessively.

A well-designed ExoTerra Conversion Kit can help insulate the vivarium and prevent heat loss, creating a stable environment for your animals.

The ExoTerra Conversion Kit: What’s Included?

When you purchase an ExoTerra Conversion Kit, you’re investing in a practical solution that addresses the key issues of moisture retention, fly-proofing, and temperature regulation. A typical conversion kit will include:

Custom Fly-Proof Lid: This is often made from durable glass or acrylic and includes ventilation slots small enough to prevent fruit flies and other small insects from escaping.

Humidity Retaining Materials: These materials may include acrylic panels or glass replacements for the mesh, helping to maintain moisture within the vivarium.

Installation Tools: Easy-to-use tools and guides to help you replace the existing ExoTerra top with minimal effort.

Optional Features: Some kits come with additional features, such as light or misting system integration, which further enhance the control you have over the vivarium environment.

By upgrading your ExoTerra vivarium, you’ll be creating a healthier, more controlled habitat for your animals and plants, ensuring that your vivarium remains a thriving, bioactive ecosystem.

How to Install an ExoTerra Conversion Kit

One of the best things about the ExoTerra Conversion Kit is that it’s designed to be easy to install, even for those who aren’t particularly DIY-savvy. Here’s a step-by-step guide to help you through the process:

1. Prepare the Vivarium: Remove any animals, plants, and accessories from the vivarium before you begin. You’ll also want to ensure that the enclosure is clean and dry before installation.

2. Remove the Mesh Top: The mesh top of the ExoTerra vivarium is typically held in place with clips or screws. Carefully remove it and set it aside.

3. Fit the New Lid: Depending on the design of your conversion kit, you may need to screw or clip the new lid into place. Make sure it fits securely and that there are no gaps where flies could escape or moisture could leak out.

4. Install Ventilation: Most conversion kits include ventilation panels to ensure that the vivarium still gets adequate airflow. Follow the instructions provided with your kit to install these.

5. Test the System: Before reintroducing your animals and plants, test the system to ensure that it’s working properly. Check for leaks, ensure that the humidity and temperature are stable, and confirm that no flies can escape.

6. Reintroduce Your Animals: Once you’re satisfied that everything is working as it should, you can reintroduce your animals and plants to their newly upgraded home.

Benefits of Using an ExoTerra Conversion Kit for Dart Frogs

For dart-frog keepers, feeder containment and moisture management are practical concerns, but there is no universal 80–100% RH target. A conversion lid may reduce evaporation; it must still leave appropriate air exchange and should be assessed in the finished enclosure.

Fine-feeder containment is useful, but no converted enclosure should be described as universally fly-proof without checking all vents, cable entries, door gaps and tolerances. The conversion does not create a ‘perfect’ frog environment by itself.

Frequently Asked Questions About ExoTerra Conversion Kits

1. Do I Need to Replace My Entire ExoTerra Vivarium?

No, the beauty of the ExoTerra Conversion Kit is that it allows you to upgrade your existing vivarium without having to replace the entire enclosure. You simply swap out the mesh lid for a more effective one.

2. Will the Conversion Kit Affect the Aesthetic of My Vivarium?

The conversion kits are designed to be both functional and visually appealing. Many kits use clear glass or acrylic materials that blend seamlessly with the existing ExoTerra design, so your vivarium will look just as good—if not better—after the upgrade.

3. How Does the Conversion Kit Affect Ventilation?

While the conversion kit helps to retain moisture, it doesn’t eliminate ventilation entirely. Most kits include small ventilation slots or panels to ensure adequate airflow, which is crucial for maintaining a healthy bioactive vivarium.

Conclusion: The Importance of Converting Your ExoTerra Vivarium

A conversion kit is one optional way to alter feeder containment and evaporation in an Exo Terra. Whether it is appropriate depends on the species, existing ventilation, room conditions and the design of the kit.

After any lid conversion, test feeder containment, ventilation, temperature and moisture before introducing animals. The modification can change enclosure performance, but it does not guarantee that a bioactive vivarium will thrive.

For more information about bioactive vivariums, custom setups, and the benefits of creating an ideal environment for your animals, explore our full range of articles and guides at Light Vibes.