Although it is not possible for fluorescent lamps to exactly replicate sunlight, the Arcadia tropical lamp is designed to bring out the red & blue peaks of natural daylight that are needed for photosynthesis & to optimise the available light output in these areas. The spectrum created by the lamp also has the effect of highlighting the fluorescent features of fish such as neon & cardinal tetras, platys & guppies, bringing out & enhancing their highly attractive natural colours, making them appear to shine even more brightly.