The Betta - Air Action Treasure Chest is an aquatic ornament that will enhance the look of any fish tank. With its unique design, it creates an impressive aqua scape that is sure to impress. The lid of the treasure chest can open and close automatically, adding a touch of realism. To activate the lid, the ornament needs to be powered by an air pump (Sold Separately) making it perfect for Betta fish tanks. However, it can also be used as a static ornament if not hucked up to an air pump.