Zilla Reptile Terrarium Heat Lamps Incandescent Bulb, Black Spot, 150W Provides more focused ambient heat without disruptive visual light Gentle glow produces little visual light allows for viewing nocturnal habits and shy species activites Pinpointed light and heat allows reptiles to easily move away from the heat source and regulate their body temperatures Heavy-duty filaments yield hours of performance Recommended for use with Zilla Reflector Domes Emits a focused, 24-hour heat source ideal for reptile basking areas Great for night-time viewing to observe natural nocturnal behaviors Ideal for tropical and desert habitats Made from glass containing rare earth black phosphors Full-spectrum lamp