The 20,000 Kelvin flouorescent lamp is a high-intensity purified super daylight lamp that simulates light in deeper waters. It casts a blue-white glow allowing light to penetrate deeper into the aquarium.
The Coralife 20,000 K fluorescent lamp is a high-intensity purified super daylight lamp that simulates the deeper ocean environment. Casting sparkling blue daylight rays, fish, coral, and, macroalgae thrive in the light. This is the ultimate fluorescent lamp for deep water aquariums. The coralife 20,000 kelvin rapid-start lamp is compatible with all standard and electronic ballasts.