Eheim powerLED+ are the new generation of LED lighting for every aquarium. Perfectly designed, individual light requirements of animals and plants in the aquarium. More efficient, long lasting and flexible than any other technology. Quality by Eheim - made in Germany.Eheim PowerLED++ up to30 % energy saving+ full depth lighting - even in high aquariums+ average service life >50,000 hours (13 - 14 years at 10 hrs./day)+ high-quality solid aluminium housing (anodized) is marine-waterproof+ threaded holes in the top housing for securing screws or hooks in any desired location+ stepless extending brackets allow the lights to be adjusted to the aquarium width+ wire suspension (singel or double) for open aquariums (not included)+ highly efficient, intelligent power supply units provide only the actual output needed (24 V) - saves energy+ possible connection of several lamps to one power supply unit with Y-adaptor (not included)+ all fluorescent tubes can be replaced with the correct adapter+