This 20W UV pond clarifier is designed for routine water clarity maintenance in koi ponds, aquariums, small ponds and decorative water features. When used together with proper water circulation and filtration systems, it helps support clearer water conditions for everyday aquatic environment maintenance. The quartz glass tube supports UV light transmission, while the protective housing design provides reliable performance for indoor and outdoor water applications. The compact structure makes it suitable for placement near pond edges, aquarium systems, filter areas or other circulation locations. The 55 inch power cord provides flexible installation options, allowing convenient setup based on your pond or aquarium layout. For best performance, install the unit in an area with proper water movement and follow the included instructions. Features: 1. Designed for 100 to 1000 gallon koi ponds, aquariums and small water features. 2. Supports water clarity maintenance when used with proper circulation and filtration systems. 3. Quartz glass tube design supports stable UV light transmission. 4. 55 inch power cord allows flexible placement around ponds and aquarium systems. 5. Suitable for indoor and outdoor aquatic environments. Specifications: Power: 20W Application Size: 100-1000 Gallon Water Systems Tube Material: Quartz Glass Cord Length: 55 Inch Package Includes: 1 x 20W UV Pond Clarifier 1 x 55 Inch Power Cord 1 x User Instruction Note: Recommended for water temperatures below 86°F / 30°C. Do not look directly at the UV light during operation. Please confirm your pond or aquarium size before purchase