Power-Glo Fluorescent Aquarium Tube 8W, 220/240v, 30.48 cm (12in), 15 mm Diameter, T5, Service Life - 3000 hoursPromotes coral, invertebrate and plant growth. Ideal for marine tanks and African cichlid aquariums. Intensifies colour and stimulates growth of macro marine algae and freshwater plants. Rapid start lamp.