The Aqualine T5 Reef White 10K lamp is a bright white lamp with a color temperature of 10000 Kelvin. The lamp simulates tropical sunlight and is considered the ideal primary lighting for both marine and freshwater tanks. For saltwater tanks, we recommend combining the Aqualine T5 Reef White 10K with the Aqualine T5 Reef Blue to increase the blue spectrum, while for freshwater, combining the Aqualine T5 Reef White 10K with the Aqualine T5 Plant Grow will help enhance plant growth. Aqualine T5 Reef White 15K 54W - 115 cm - 60 kWh per 1000 hours Aqualine T5 Reef White 15K 39W - 85 cm - 44 kWh per 1000 hours Aqualine T5 Reef Blue 80W - 145 cm - 85 kWh per 1000 hours Length: 39W - 85 cm 54W - 115 cm 80W - 145 cm