Resin for Aquarium Sea Pearl Shell Bubble Stone Oxygen Pump Fish Tank Ornament Bubble Diffuser

Label:Yes Package: 1pc*Oxygen Pump Bubble Stone. Feature: Lifelike, durable. Type: Oxygen Pump Bubble Stone. Size: as picture. Shape: Volcano, coral, sea pearl shell. Material: made of premium resin, lightweight and durable. Air inlet calibre: Diameter 4mm( suitable to connect inner diameter 4mm soft tube, not included ), Creates bubble in fish tank when attached to air pump ( not included ), Increase oxygen levels , lower CO2.