DIY MODE] Time colour and Brightness 3 setting choose Timing (Timer control key): 3 choices timer running for 6 hours or 10 hours or 12 hours BrightnessOn-Off key: 10 level brightness and Switch function colour (WB key): 3 color modes choose All lights on WhiteRedgreenPink Only Blue Full Spectrum Aquarium Light] With full spectrum lighting which is helpful fish and aquatic plants growth fit for all fresh water tanks The controller is very simple and no complicated operations Suitable for all starters to experienced fish tank lovers to use High-quality Led& High cRI] Using high-quality SMD2835 led chips 6500k white light red light pink light green light and blue light the light is very soft and beautiful and the colour rendering index is up to 89% which is similar to natural light 5 columns of Led chips Extendable Metal Bracket] compared with other tank lights up to 5 columns of led chips they are more compact and beautiful good heat dissipation of the ABS shell Use the stable and durable metal bracket adjustable extendable bracket fit for most gallon tanks Application Size & Memory function] The aquarium light fit for 24 inch-30 inch tank In case of power failure the setting remains the same as before and the start time will restart counting after the power is turned on PS: The light rises slowly in 15 minutes and gradually decreases in the last 15 minutes It is very friendly to fish You can easily to install this led fish tank light on most of glass or acrylic aquarium tanks with transparent hoodlid or no with rims or rimless