Blue Tongue Skink Tank Size
Tiliqua spp.
The short answer: an adult needs 120 gallons — 48" × 24" × 24". Below is what to use at each stage, and why the enclosure type matters as much as the volume.
Baby
40 gal36" × 18" × 18"
Starting enclosure for young skinks up to 8 months
Juvenile
75 gal48" × 18" × 21"
Mid-sized tank for growing blue tongue skinks
Adult
120 gal48" × 24" × 24"
Minimum for adult blue tongue skinks, larger preferred
Enclosure type
PVC front-opening enclosure or large glass tank with secure screen top
What most people get wrong
Blue tongue skinks are large, active, terrestrial lizards requiring substantial floor space. 4x2x2 feet (120 gallons) is the minimum for adults; larger species may need 6+ feet of length. Height is less critical but should allow for basking shelf. PVC enclosures retain heat better than glass.
Other species
Need to compare sizes side by side? Use the calculator.