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 W button to control the brightness of white and red lights and press the B button to control that of the blue light. Night Mode (only blue light is on): Press the B button to adjust the luminance. 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. Heavy-duty Design: FCC-certified aquarium light. The clear board is strictly sealed with silicone to keep out moisture or droplets. Solid aluminum shell can accelerate heat dissipation. The long-lasting bulbs and ETL-certified adapter ensure safe and continuous lighting. Product description 1 Long-lasting Bulbs 2 Daytime/Night Mode 3 Adjustable Brightness 4 Operation Method 1 Extendable Bracket 2 Waterproof 3 Aluminum Shell 4 Safe Reliable Aquarium LED Light Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 1,745 4.5 out of 5 stars 1,745 4.5 out of 5 stars 1,745 4.5 out of 5 stars 1,745 4.5 out of 5 stars 1,745 4.5 out of 5 stars 1,745 Price $8.99$8.99 $19.99$19.99 $32.39$32.39 $37.99$37.99 $38.69$38.69 ? Power 9W 12W 16W 19W 26W 31W Applicable tank 12-18 Inch 18-24 Inch 24-30 Inch 30-36 Inch 36-48 Inch 48-54 Inch Lamp Body Length 10.43 Inch 16.54 Inch 22.44 Inch 28.34 Inch 34.26 Inch 44.64 Inch PAR 55 67 80 82 92 83 Kelvin(White,Red,Blue) 6500K,660nm,450nm 6500K,660nm,450nm 6500K,660nm,450nm 6500K,660nm,450nm 6500K,660nm,450nm 6500K,660nm,450nm LED QTY 36 54 72 90 108 144 Output Voltage DC20V DC20V DC20V DC20V DC20V DC20V Input Voltage AC100-240V AC100-240V AC100-240V AC100-240V AC100-240V AC100-240V