H2Show Volcano Kit by Hydor includes a hand-painted resin ornament, bubble maker and a red LED spotlight. When combined, red bubbles flow from the top of the ornament, creating the unique effect of an erupting volcano. Transparent Lava Flows on the ornament allow light from the red LED to shine through adding the extra effect of overflowing lava. No additional purchases required, everything needed for set up is included. Ideal for aquariums ranging from 13 to 52 gallons.