What terrarium for a crested gecko? Complete guide.

Terrarium size — start small, grow with your gecko

For a young crested gecko, a smaller terrarium is often the better choice. It is easier to monitor feeding, observe the animal's behaviour, and maintain the right humidity. A space that is too large at first can make it harder for a young gecko to find food and feel secure.

As your gecko grows, upgrade to a larger, vertical terrarium with plenty of hides, plants, and climbing elements. Crested geckos are arboreal animals — height and vertical space matter more than floor area.

Ventilation — the most important (and most overlooked) factor

When choosing a terrarium, ventilation is the single most important thing to check. In a tropical habitat, proper air exchange is critical — it keeps humidity at the right level, prevents mould and fungal growth, and helps avoid respiratory problems.

Look for terrariums with full mesh tops or double front vents — not just a small hole or a narrow strip at the top. A well-ventilated terrarium can still hold humidity perfectly; a poorly ventilated one becomes a breeding ground for problems.

Trusted brands

Not all terrariums are created equal. We recommend choosing from established manufacturers who design their products specifically for reptile keeping — with proper ventilation and long-term durability in mind.

Exo Terra is the most widely used and trusted brand for crested geckos. Their front-opening design with double ventilation (bottom and top mesh) makes it easy to access your gecko, maintain the enclosure, and keep conditions stable.

Other solid options include ReptiBreeze (full mesh, excellent airflow) and Reptiplanet — always check the ventilation design before buying.

What to avoid — cheap terrariums

Be cautious with the cheapest terrariums, which often have very limited ventilation — sometimes just a small hole or a narrow strip at the top. In a humid tropical environment, this leads to hygiene problems, mould, fungal growth, and poor air quality inside the enclosure.

A poor terrarium is a false economy: health problems caused by bad conditions cost far more than a quality enclosure from the start.

Summary

A terrarium is not just decoration — it is your gecko's entire living environment. Getting it right from the start sets your gecko up for a healthy, long life (15–20 years with good care).

• Start with a smaller terrarium for juveniles
• Adult minimum: 40x40x60 cm vertical — bigger is better
• Prioritise ventilation above everything else
• Choose trusted brands: Exo Terra, ReptiBreeze
• Avoid the cheapest options with poor airflow