The Juwel T5 Blue HiLite Bulb was specially developed to simulate the light if conditions on coral reefs to depths of around 6 m. Thanks to the special light spectrum of Actinic Blue HiLite, the growth of corals can be promoted individually. The Blue HiLite is ideal for use in conjunction with Juwel HiLite Marine, or as an additional light in tropical tanks, allowing you to view the behaviour of your fish in the evening.