Fulfilled by our friends at Dog Hugs Cat Enhance the clarity and purity of your pond with the sophisticated Pondmaster Ultraviolet Clarifier: Advanced Algae Sterilizer. This submersible UV Clarifier is not just functional but also visually striking. Its glowing monitor halo ring visible from all angles instantly indicates its operational status ensuring peace of mind at a glance. Crafted with precision each UV Clarifier comes equipped with a durable 9000-hour bulb a watertight quartz sleeve a transformer and an 18-foot power cord for convenient installation. The submersible vortex flow design efficiently eliminates algae and algae blooms maintaining a pristine aquatic environment. Whether placed inside or outside the pond the unobtrusive black color of this UV Sterilizer seamlessly integrates without disrupting the aesthetics of your pond. The soft blue halo emanating from the unit showcases its functionality day and night adding a subtle touch of elegance to the surroundings. Choose from three UV light options based on your pond size and flow rate needs: - 10 Watt UV: Suitable for ponds up to 1 500 Gallons with a maximum flow rate of 700 GPH. - 20 Watt UV: Ideal for ponds up to 3 000 Gallons with a maximum flow rate of 1 800 GPH. - 40 Watt UV: Designed for ponds up to 6 000 Gallons with a maximum flow rate of 2 400 GPH. With dimensions ranging from 12 inches to 24 inches in length the UV lights offer versatility to cater to different pond sizes and layouts. For added peace of mind each UV Sterilizer comes with a 1-year limited manufacturer s warranty (lamp and quartz sleeve excluded) ensuring quality performance and reliability. For optimal results consider keeping the UV Sterilizer operational year-round especially during the spring season when fish activity increases. Remember to replace the UV lamps annually to maintain peak performance and efficiency. Elevate your pond maintenance routine with the Pondmaster Ultraviolet Clarifier: Advanced Algae Sterilizer a blend of functionality and aesthetics designed to enhance your aquatic oasis.