This UV light has a unique design which turbulates the water through a helix design so the water does not just run through the UV but spins inside allowing the UV more exposure before the water comes back out from the outlet. Enabling increased efficiency by a more even exposure of the water to the UV. The Ultra Violet Clarifier (UVC) continues to form a key element of a clear water system. Unlike most other sterilisers, this unit has three inlets / outlets - very useful if you want to run the output to a two-fall waterfall of a waterfall and a filter. The unit comes complete with six hosetails (three for small hose and three for larger hose). The UV clarifier also has an translucent end port so you are able to check at all times that the UV is fully operational. The sterilizer is also supplied with a separate glass viewport that you can use in place of one of the hosetails if you want to use the steriliser as a one-in, one-out version. Features Wall mounting brackets already attached to the UV light complete with screws Translucent end port so you are able to check at all times that the UV is fully operational. Suitable for marine and freshwater. Specifications Power 9w Suitable for Pond Sizes up to 4000 Litres Max Pressure(bar) 0.3 90 % Through Flow sterilization at 1500 L/H Inlet&outlet Adapter sizes will fit 0.5" 0.75" 1" 1.25" & 1.5" Power cable; 5m Length UV case 27 cm UV Bulb included with the unit (1 x 9w) Voltage: 220-240V 12 Months Warranty