Nano Infrared Heat Lamp - 40 W The Zoo Med 40 W Nano Infrared Heat Lamp is designed to fit Nano terrariums, which is suitable for small geckos, hatchling reptiles, amphibians or invertebrates. Install one of these lamps into your fixture to provide your pet with a 24 hour heat source and optimal nocturnal viewing which does not disturb your pets resting patterns. This quality product is supported by a 3 month manufacturer's warranty.