Enclosure Type
glass tank
Floor Space
2.5 sq ft
Dimensions
30"L × 12"W × 12"H
Bearded Dragon Minimum
8 sq ft
Verdict
Depends on Setup ℹ️
💰 Typical Price: $30–$80
Our Verdict
Based on the floor space and enclosure type analysis above, this enclosure is depends on setup ℹ️ for a Bearded Dragon.
Pros & Cons of the 20 Gallon Long Glass Tank
✅ Pros
- Decent floor space for the price
- Escape-proof
- Holds burrowing substrate well
- Widely available secondhand
❌ Cons
- Borderline minimum for most small mammals
- Always buy the "long" variant — not the "high"
- Limited ventilation without mesh lid
What Bearded Dragons Need in an Enclosure
Bearded dragons need front-opening enclosures with full UVB lighting (T5 HO, full-length fixture), a basking spot reaching 100-110°F, and a cool side around 80-85°F. Glass tanks are acceptable for adults but PVC or wood enclosures retain heat more efficiently. Screen-top enclosures cause heat and UVB loss. Adult dragons need a 4'x2' enclosure at minimum.
⚠️ Things to Avoid for Bearded Dragons
- Screen or mesh-top glass tanks for adults — loses heat and UVB rapidly
- Enclosures under 4x2 ft for adult beardies
- Compact spiral UVB bulbs — proven to cause eye and health damage
- Housing two bearded dragons together — highly territorial, causes stress and injury
- Loose particle substrate for juvenile dragons — causes deadly impaction
Other Enclosures for Bearded Dragons
- 10 Gallon Glass Tank
- 40 Gallon Breeder Glass Tank
- 75 Gallon Glass Tank
- DIY Bin Cage (110L / 640+ sq in)
- Single Critter Nation
- Double Critter Nation
- IKEA Detolf Glass Cabinet (converted)
- C&C Grid Cage (2×4 Grids)
- C&C Grid Cage (2×5 Grids)
- Wire Dog Crate (Medium — 36")
- Wire Dog Crate (Large — 42")
- Heavy-Duty Escape-Proof Dog Crate
- Cat Tree / Condo (72"+ height)
- Indoor X-Pen / Exercise Pen
- PVC Reptile Enclosure (4'×2'×2')