Pawfly 21W Aquarium LED Light for 30 to 36 Inch Extendable Fish Tank Light with Full Spectrum Brilliant White Blue Red Lights with Daytime & Night Modes Timer Auto On/Off Adjustable Brightness

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.
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.
6 Intensity Levels: Daytime Mode (all lights are on): Press the D button to control the brightness of white and red lights and press the N button to control that of the blue light. Night Mode (only blue light is on): Press the N button to adjust the luminance.
Auto On/Off: With a built- in timer, the submersible aquarium tube light provides 3 optional lighting durations: 8 h, 10 h and 12 h (Only work during the first 8, 10 or 12 hours within 24 hours). Perfect for creating a natural environment.
For 30″ to 36″ Tanks: With an extendable bracket (min length: up to 29″; max length: up to 44″), the LED aquarium light always stays steady on the fish tank. Work best on tanks of 30 to 36 inches long.