Full spectrum daylight bulb with high-output to encourage coral growth and a well balanced spectrum to produce good color definition. Excellent for bringing out the yellows, oranges and reds in an aquarium. To balance the almost orange color of the bulb we recommend using it in combination with 2 or more Blue Plus bulbs. Mean Lumens: 1840. Color Temperature: 3000K. Color Rendering Index (CRI): 85.