Coralife 54332 Actinic Straight Pin Compact Fluorescent Lamp, 24-Watt
Actinic lamps emulate the softer shades of blue light found at dawn, dusk, and in deeper water. With a spectral peak at 420 nanometers, actinic lamps promote photosynthesis and cause corals to fluoresce in beautiful glowing colors. For use with saltwater and coral reef aquariums.