Merck Manual

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Reptile Housing Requirements

Reptile Housing Requirements


Tropical species

80 to 100°F (27 to 38°C)

Temperate species

68 to 95°F (27 to 38°C)

Semiaquatic turtles

Slightly lower range


All species

Varies by species; in general anything below 35% or above 70% may cause problems


Subtropical and tropical species

10 hours (winter) to 14 hours (summer)

Temperate species

8 hours (winter) to 16 hours (summer)


All species

UV and UVB: 290 to 320 nanometers

Basking light: 50 to 75 watts at least 18 inches from basking area