Metal Halide Bulbs are the absolute best UV source for your pet reptile on the market. Combining optimal levels of UVA, UVB, visible light, and heat, Metal Halide Bulbs are simply the best. A Metal Halide Bulb will bring out natural behaviors in your pet reptile, as well as increase it's coloration and overall health. Metal Halide Bulbs are perfectly safe to use as the sole source of light for your pet reptile, and is available at a great value at Josh's Frogs.