LSM: LUNAR SIMULATOR MODULELunar lighting can replicate your animals natural environment. By simulating lunar cycles in your aquarium you can help encourage breeding of fish and spawning of corals. The Lunar Simulator LED lights can be connected directly to the Neptune Systems LSM module with any Apex Controller system. Note: This unit comes with 3 LED's in a string and connects to the Lunar Simulator Module, sold separately.