The aqualine T5 Reef White 10K is a bright white bulb with a color temperature of 10000K.The lamp simulates tropical sunlight and is the ideal basic illumination for marine as well as freshwater aquaria.For saltwater aquariums, we recommend combining aqualine T5 Reef White 10K with aqualine T5 Reef Blue to increase the blue spectrum while for freshwater the combination of aqualine T5 Reef White 10K with aqualine T5 Plant Grow will enhance plant growth.aqualine T5 Reef White 15 K 54 W – 115 cm B – 60 kWh/1.000 haqualine T5 Reef White 15 K 39 W – 85 cm B – 44 kWh/1.000 haqualine T5 Reef Blue 80 W – 145 cm B – 85 kWh/1.000 h Length :-39 W – 85 cm54 W – 115 cm80 W – 145 cm