JW Aircore Sand Airstones provide the oxygen your aquarium fish and plants need for a healthy life. Made from pressed sand, Aircore stones allow for uniquely even air distribution in the tank, with a notched shape to increase bubble-producing surface area for maximum aeration.

• Pressed sand composition allows for even air distribution
• Unique notched design increases bubble-producing surface area
• Provides oxygen for the health of aquarium fish & plants

Note: An air pump (sold separately) is required for use.