The ATI Blue Plus T5 Lamp is an innovative lighting solution for saltwater reef aquariums. It combines the properties of a blue bulb at approximately 460 nm with an actinic bulb at around 420 nm, producing intense and high PAR blue light that encourages bluing in SPS corals and fluorescence in various other coral species. This lamp helps to balance out any washed-out or yellow hues in your aquarium, ensuring that the water stays clear and vibrant. Ideal for use as a supplement to metal halides or alongside other full spectrum T5 bulbs like Aquablue Special, Purple Plus, it can also be employed for dawn/dusk applications.