This Air Stone provides fun colorful LED lights to create a cool bubble effect in your tank. Bubbles are great for your fish it oxygenates the water. This item is good for fresh and marine tanks. 12 Multi color LEDs! Our Aquarium bubble light is great night light for wonderful nocturnal viewing, produces a impressive RGB colors air curtain. Easy to install in your aquarium, Strong filtration suitable for freshwater and saltwater fish tank background decoration. Please run with a 3watt or more air pump. Air pump not included.