UVB for Crepuscular and Shade-Dwelling Species Juni 14, 2016 Crepuscular Dart Frogs Frogs Geckos +4 Health Lighting Lights Nocturnal Shade Terrarium Thermoregulation UVB Vitamin D Crepuscular Dart Frogs Frogs Geckos Health Lighting Lights Nocturnal Shade Terrarium Thermoregulation UVB Vitamin D