Watch the LEDs cycle through hundreds of colors, providing a stunning glow, as the bubbles rise up through the water. The LED Bubble Wands feature built-in air stone creating a curtain of air bubbles for improved oxygenation. Use in freshwater or marine aquariums.10 ft long power cord. The 16 LEDs create a unique and striking light effect in any aquarium. Includes 4 repositionable suction cups for secure installation to the bottom or back of an aquarium.