NEW high wattage compact UV lamp system which enables twice the light output as linear lamps. Effective long term control of green water that is suitable for ponds up to 32,400 litres (7,128 gallons). Twice the UV output - Advanced power compact UV lamp system enables twice the UV light output in the same installation area compared to conventional linear lamps. Low running costs - Low pump back pressure contact chamber combined with efficient power compact UV lamp. All fittings supplied - Multi hosetails to fit all standard hoses and solvent weld 1 1/2\" pipe work adapters included. Flexible modular design - Any number of Blagdon professional UVC units can be connected together via optional wide bore link pipes. Unique linking system enables simple future expansion to meet your needs. NOTE: UVC bulb included.