Amzdeal Aquarium Fish Tank Light 18 Inch 18 LED Underwater Air Pump Bubble Lighting (Blue) Safety low voltage 12V DC design, safe for your fish and yourself. Two suction cups on the bottom of the light, can be fix on the appropriate location of tank buttom tightly. Completely water resistance design, entire electronic route are sealed for underwater work. Easy to install: self-weighted, quick assemble and install in your aquarium, suitable for fresh and saltwater aquarium. Ideal for the home, dorm room, or office.