African Fat-Tailed Gecko Tank Size Guide

African Fat-Tailed Geckos are terrestrial geckos that spend most of their time on the ground. That means floor space and substrate depth matter far more than enclosure height. This guide covers the right enclosure size at every life stage, what to look for in an enclosure type, and how AFT sizing compares to the similar Leopard Gecko.

For full care context, see the African Fat-Tailed Gecko Care Guide.

Minimum vs Recommended Tank Size

Many keepers start hatchlings in a 20-gallon long and never need to upgrade. If you want to buy once, a 40-gallon breeder works for any age and gives your gecko room to establish a proper thermal gradient.

Why Floor Space Matters More Than Height

AFTs are primarily terrestrial. Floor space and substrate depth are more important than enclosure height. A tall enclosure with a small footprint is a poor choice — it limits the thermal gradient and reduces usable space without benefiting the gecko.

That said, AFTs will occasionally climb low décor and cork bark, so a little height (12–18") is fine and allows for naturalistic furnishings.

Substrate Depth

While they aren't dedicated burrowers like hognose snakes, AFTs appreciate 3–4 inches of substrate that allows them to partially bury themselves and helps maintain enclosure humidity.

See the Reptile Substrate Guide for substrate recommendations.

Enclosure Type Comparison

For AFTs specifically, PVC or front-opening glass enclosures are the best long-term choice because they retain humidity without constant intervention. A standard screen-top glass tank works but requires more active humidity management — covering part of the screen with foil or a glass panel is a common workaround.

See the Reptile Enclosures Guide for a full breakdown of enclosure types and recommendations.

20-Gallon vs 40-Gallon Breeder

The 20-gallon long (30" × 12") is the most common starting point and works well for a single adult AFT. The 40-gallon breeder (36" × 18") gives more floor space, allows a better thermal gradient, and is the better long-term choice if budget allows.

AFT Tank Size vs Leopard Gecko Tank Size

The enclosure size requirements for AFTs and Leopard Geckos are nearly identical — both are terrestrial geckos of similar adult size. The key difference is that AFTs need better humidity retention, which makes enclosure type more important than enclosure size when comparing the two species.

If you're upgrading from a Leopard Gecko setup, the same enclosure dimensions work — but you'll need to address humidity retention if you're using a screen-top glass tank.

Can I Keep Two African Fat-Tailed Geckos Together?

Housing AFTs together is generally not recommended. Males will fight. While experienced keepers sometimes maintain compatible female pairs, individual housing is the safest and most reliable option for most keepers.

FAQs

Is a 20-gallon tank big enough for an African Fat-Tailed Gecko?

Yes — a 20-gallon long (30" × 12" footprint) is the accepted minimum for an adult AFT. It's workable, but a 40-gallon breeder gives more room for a proper thermal gradient and enrichment. If you're buying an enclosure for a hatchling, consider starting with the 40-gallon so you won't need to upgrade later.

Do African Fat-Tailed Geckos need a tall enclosure?

No. AFTs are ground-dwelling geckos and don't use vertical space the way arboreal species do. A standard 12–18" height is more than sufficient. Prioritize floor space over height.

What's the best enclosure for an African Fat-Tailed Gecko?

A front-opening PVC or glass enclosure in the 40-gallon breeder footprint (36" × 18") is the best all-around choice. It retains heat and humidity well, provides easy access, and gives the gecko enough floor space to establish a proper thermal gradient.

Related Guides

• African Fat-Tailed Gecko Care Guide
• African Fat-Tailed Gecko Heating and Humidity Guide
• African Fat-Tailed Gecko Health Guide
• Reptile Enclosures Guide
• Reptile Substrate Guide
• Best Reptile Hides
• Best Humid Hides for Reptiles