Our Daylight Blue Bulbs are perfect for use in horizontal facing light hoods. Because we use true blue European glass (not painted or coated) you get better heat transfer and a longer life. Our full spectrum daylight bulb provides UVA, the wavelength that promotes a psychological well being and stimulates normal feeding behaviors in reptiles and is ideal for heating reptile or amphibian terrariums. Available in 60 and 100 watts.