ZOO MED NANO COMBO DOME LAMP FIXTURE 80 Watt maximum combined wattage (40W max per socket), two 9cm domes. Very small dual-lamp fixture for nano-size terrariums (37 litre or smaller). Ideal for small Geckos, hatching Reptiles, Amphibians, Tarantulas, Insects and other invertebrates. For use only with Zoo Med's Nano heating and lighting products. Polished inside.