*IMPORTANT SHIPPING NOTES: After adding correct lamps to your shopping cart please visit our "Shipping Fee Schedule for URI VHO Lamps" page for important information on shipping surcharge. Indigo Sun VHO Fluorescent Lamps by UV Lighting Co. With a crisp white look and a slight blue hue this lamp is made of 50% 454nm and 50% tri-band, white phosphors. It adds dimension and simulates a natural reef appearance. URI has established itself as the hobby favorite with their popular VHO lamps and now they're continuing this with their T5 line. T5 lamps are unmatched in their output and intensity due their reflective possibilities. Their small diameter (compared to other fluorescent lamps) allows manufactures to create parabolic reflectors that are extremely efficient. These lamps are the future of fluorescent technology. Whether you use them as supplementation with metal halide or stand alone they are sure to impress. All URI lamps come with 180` internal reflector which allow 40% more light output. Available lamp Sizes: 48"(110W), 72"(160W).