YueYueZou&reg; 18 Inch Blue or RGB Air Bubble Light for Aquarium/Fish Tank Buyer Note!!! This list contains a light that might be multi-color or blue one, its randomly shipped after you place the order, mostly you will get a blue 18 inch bubble light!!! Great night light for wonderful nocturnal viewing, produces a impressive RGB colors air curtain, adds a whole new decorative dimension to any aquarium. Self-weighted, quick assemble and install in your aquarium, suitable for fresh and saltwater aquarium. Use low voltage DC 12V working voltage, safe and won't cause any harm to people or fish. Length: 46cm/18inch; width: 2.5cm/0.97inch; height: 1.2cm/0.46inch; Power: 6W