Zoo Med Reef Sun 50/50 Bulb

50/50 combination of 6500K trichromatic daylight phosphor and actinic 420 phosphor in the same lamp.Ideal for all marine aquariums, reef aquariums, African cichlids, and discus fish.Provides high intensity full spectrum illumination, strong in the shortest wavelength blue region essential for photosynthetic corals and invertebrates, balanced with 6500K daylight for natural color enhancement and viewing pleasure.Long Lasting: effective for up to 10,000 hours.