Amzdeal 12in 2.7w RGB Slow Color Changing LED Aquarium Light Bar Bubble Strip & Airstone for Fish Tank Adds a whole new decorative dimension to any aquarium. Great night light for wonderful nocturnal viewing. Produces a impressive RGB colors air curtain. All RGB colors fade out and fade in every 3-4 seconds, very slow and smooth color changing. Utilizes low wattage LED lamps, comes with a low voltage transformer. Self-weighted, easy to assemble and install.