Hozelock Vorton 18000 UVC Pond Filter Code: 1554 Hozelock Vorton 18000 UVC Pond filter In-Built "Turbulator" - The flow of water through the UVC, created by the product design, increases the units efficiency by even exposure of the water to the UV light. Single ended UV lamp design means 30% more UV light is emitted than a double ended lamp of the same wattage. Quartz Tube allows 87% of the UV rays to pass through it and penetrate the water where it can act on the algae. Careful product design ensures the UV lamps are kept within their optimum operating temperature range, which means that they are always working at their most efficient. Wattage 2x 9W Max Pond Size: 18000 ltr Recommended Flow: 9000 ltr Hozelock Clear water guarantee. The whole UVC unit has an IP65 waterproof rating, and is designed for outside use. Price: £80.81 (Excluding VAT at 17.5%) Quantity: