AZ Universal Clamping Lamp 11W * Black * 220-250v 50Hz Description:  * 6700k full spectrum illuminations， ideal for aquatic plants and marine reef growth. * Enhance the re colour of ornametl fish. * Fashionable， compact and easy to install it to the aquarium. * Provides the optimum lighting for plants 8-10 hours per day. * Special electronic Ballast (Low Heat). Introductions: * Ergonomically design to fix on any aqurium tanks.  * Easy to operate and mount-on with ease. * Absolute versatility as lamp can be bent at any angle. * Maintenance free， needful only to change aged light tubes. * Extra Bright. * Comes in attractive silver and black design. * For fresh and marine tank usage. * Can be used for other illuminating purposes (reading， shelve， lighting). Instrustions: * Simply slide the lamp onto desighted tank side. * Ensure that the lamp is always above water level. * Plug in the power cord and turn power on. * In any case if the lamp drops into the aquarium tank， turn off the power point immediately before retrieving it. * During the change of light tube， do turn off the power cord. * Do not touch the lamp with wet hands. * Use the attachment holder if tanks come with side frames. * Do change light tube yearly for maximized brightness.