Powerful blue actinic spectral peaks essential Lighting promotes coral growth and enhances their colors Fish colour enhancing light Lighting apparatus that produces more light proportionally to its surface area compared to other conventional fluorescent tubes Longer life than other similar high brightness fluorescent tubes Maintains a higher luminous flux throughout its lifetime unlike other similar fluorescent tubes Highly recommended tube for photosynthesis in corals, invertebrates and other photosynthetic inhabitants Visible blue spectrum that highlights blue tones of fish, corals and other invertebrates