*Key Features *Upgraded High-quality LED Lights: VEVOR high-power and high-lumen full-spectrum aquarium lights feature premium RGB5050 and 2835 monochrome beads, offering uniform and stable lighting without flickering. Full spectrum lighting provides optimal illumination for fish and enhances visual comfort for you, with energy-efficient and long-lasting performance up to 30,000 hours. *Customizable Settings with LCD Monitor: Adjust the color, brightness, and RGB ratio of the lights according to your preferences. Enjoy 7-color night lighting and automatic gradual color cycling, with options to set 10 levels of brightness and control RGB ratios. With programmable features, create the perfect lighting for corals or fish, promoting photosynthesis and growth of aquatic plants. *All-Day Settings: Set the runtime to automatically simulate natural environmental light cycles 24/7, or customize timers for daytime and nighttime lighting separately. Power-off memory function ensures the fish tank light automatically returns to the previous mode after power restoration, maintaining consistent and stable illumination. *Waterproof and Durable: With IP67 waterproof rating, the light is protected against splashes and accidental water exposure. The high-quality fully sealed 1.2mm thick aluminum alloy shell provides effective heat dissipation and protects the full-spectrum aquarium light from humidity and water damage. *Wide Applications: Designed for 18-24 inch aquariums, VEVOR aquarium LED lights include 2 extendable brackets with a maximum single-side extension of 5.5 inches and dual-side extension of 11 inches, making them easy to install on most glass or acrylic aquarium tanks, with or without transparent hood/lid, and with rims or rimless. Suitable for both novice and experienced aquarium enthusiasts. *Specifications Item Model Number: FG191-45 Rated Power: 18W Suitable for Aquarium Size: 18-24 inch Product Dimensions: 17.72 x 3.74 x 1.38 in / 450 x 95 x 35 mm (brackets in retracted state) Net weight: 1.12 lbs / 0.51 kg *Package Content 2 x Extendable Brackets 1 x Adapter (1.5m Cable Length) 1 x User Manual