Promotes coral, invertebrate and plant growth. High intensity. Photosynthetic deep marine spectrum. Total illumination for living corals, marine algae and freshwater plants. Power-glo is a high intensity bulb that provides rigid illumination required by corals and freshwater plants. Fish colors are intensified while the deep marine spectrum stimulates growth of macro marine algae and other plants. Use power-glo in a wide range of habitats including aquariums, terrariums and vivariums.