Featherbrite LED UV Blue bulb with Adapter is the best of the best for your pet bird. This UV bulb is 400 nanometers and 1.5 watt which is a perfect low dose UV bulb because it eliminates the worry of how long to use the bulb. You can leave the LED UV blue bulb on along with the 5500k LED full spectrum day bulb for optimal results. We recommend replacing the UV bulb every 6 to 8 months.
There is no mercury in this bulb which is really good for the environment and at 1.5 watts, inexpensive to operate.