HeliaLux Spectrum The HeliaLux Spectrum is a high-performance LED light unit with a full spectrum. The state-of-the-art, specially developed SMD LEDs guarantee maximum light yield for optimum plant growth while simultaneously realising energy savings of around 50%. White LEDs illuminate your aquarium brilliantly, while red, blue and green LEDs create intense colours and maximum contrast in your underwater world. The perfectly coordinated colour range promotes the vitality of your fish and ensures optimum plant growth. There are no limits to the design or control when LEDs are used in connection with the HeliaLux SmartControl. The HeliaLux Spectrum can only be controlled in conjunction with the HeliaLux SmartControl, which is sold separately and available here: https://www.warehouse-aquatics.co.uk/juwel-lighting-led-helialux-smartcontrol-48996.html