Linear Pin 55W/65W Compact Fluorescent Bulb

One tube is True Super Actinic Blue 03 420nm second tube is 10,000K Super Daylight. Combination of spectrums that provide color and growth of marine life. Excellent choice for saltwater and reef aquariums. Promotes photosynthesis essential for the health of coral and invertebrates. Intensifies the beauty and vibrant color in fish, coral and marine life. Great bulb to use in systems with only Compact Fluorescent bulbs for a more even light spread. 1.5 in. W x 21 in. L x 1 in. H. Hamilton Compact Fluorescent lights supply the most concentrated light intensity, color spectrum and wavelength essential for photosynthesis and coral health.