Zoo Med Reef Sun 50/50 Daylight and Actinic 420 Phospor Mini Compact Fluorescent Lamp White, Blue 5 in

50/50 combination of 6500K trichromatic daylight phosphor and actinic 420 phosphor in the same lamp. For marine reef tanks, nano tanks, and aquariums where a subdued light effect is desired. Self-Ballasted compact fluorescent lamp.