The Sunyiny Aquarium Decorations, Air Stone Bubbler Volcano Shape Ornament Kit Set with Red LED Spotlight for Betta Aquarium Fish Tank is a great way to add some style and fun to your fish tank. The set includes a red LED spotlight, which is submersible and safe for your fish, and a rotatable air stone bubbleber, which creates a unique effect of an erupting volcano. The air stone bubbleber is easy to set up and comes with instructions.