11W Aquarium LED Light for 12 to 18 Inch Fish Tanks Extendable Fish Tank Light

Size: 12-18  2 Lighting Modes: Short press the M button repeatedly on the fish tank light to switch between daytime and night modes. Hold the M button for 3 seconds to turn all lights off. Simulate natural sunrise and sunset to energize your fish and give them a sound sleep.  For 12 to 18 Tanks: With an extendable bracket (min length: up to 11.5; max length: up to 20), the LED aquarium light always stays steady on the fish tank. Work best on tanks of 12 to 18 inches long.  Full Spectrum: The fish tank light contains 6500 K white light, 450 nm blue light and 660 nm red light. LUX: 2500; PAR: 55; CRI: 90. The vivid lights can reproduce the real colors of objects to relieve the visual fatigue, and thus improve the comfort of the environment.