High-Lite refers to the new light technology by Juwel Aquarium. It combines the existing tube lengths of the T8 with the new bright T5 technology. High-Lite Colour tube enhances natural colours with a colour temperature of 6800 Kelvin . It intensifies red and blue colours. For Freshwater we recommend following combinations: Colour + Day The 742 mm / 35 Watt High-Lite Tube can be used in a 92 cm light unit. The following aquariums can be fitted with this Tube: Vision 180. High-Lite Tube Colour 35 W (742 mm)