Marina Betta LED light is perfect for brightening up your Marina Betta Aquarium. The X-watt wattage? light is an excellent way to highlight decorative aquatic items and also serves as a reassuring nightlight for kids. The light installs easily on the back wall of the aquarium. Key Features - LED light for Marina Betta Aquarium - Fits 2/3 litre and Half Moon Marina Betta Aquariums - Fully submersible - Safe low-voltage design-only 6 volts