G13 t8 25 w aquastar sylvania brandthis tube light is specially suitable for the illumination of aquariums a tropical light which supports the growth of both corals as well as aquatic plants is simulated with a luminous colour of 10 000 kelvin features for all biological organisms in fresh or saltwater aquariums dimmable luminous colour daylight 10 000 k operating device is required voltage 84 v