- Material: resin and plastic
- Durable, non-toxic and pollution-free.
- safe for freshwater fish or saltwater fish
- Real motion air-driven ornaments provide entertaining action while aerating your tank.
- Great-looking ornament and really fun to watch
- When the diver floats the treasure chest will open and closes to reveal the treasure inside
- Requires an air pump (Not Included) & 3/16" tubing (Not Included) and an air valve to control the flow of the air to the chest, then you can adjust the frequency in which the lid opens.