The Sera LED Moonlight Set is a nocturnal lighting system that imitates moonlight conditions during lunation. Lunation lasts 29 days from new moon via waxing moon until the brightes phase at full moon, followed by waning moon until the next new moon. Light variations of the different moon phases are simulated by the brightness programm. It is therefore possible to design the aquarium or terrarium even more similar to nature.Sera LED Moonlight Set+ moon phase simulation for all freshwater and marine water aquariums+ also suitable for all terrariums+ individually programmablemoonrises and moonsets+ noctornal cloud scenarios+ for varied nocturnal observationstechnical Data Sera LED Moonlight Set:Length of the LED lamp: 180 mm2 holders with suction cupsmountin with the Sera LED fixture possibleLumens: 173 lm10,000 - 12,000 K (depends on the dimming state)power consumption: 20V, 3 wattsindividuall programmable LED digital Moonlight TimerPower supply 1A/20V separately available (not included