Bubble Stone : 40mm x 15mm/1.57″”x0.59″” (D*H)
Air Tube : 4mm internal diameter and 6mm external diameter.
Bubble Stone : Mineral stone + Plastic.
Air Tube : PVC.
100% brand new and high quality
Increase oxygen levels, lower CO2 and raise pH.
It is an important instrument to successfully keep aquatic fish for respiration process.
Durable, washable and sintered by high temperature, different from other air stones.
Creates bubbles in fish tank while attached to an air pump.
Creates water currents and dazzling underwater scenes.
Easy and convenient to use.
Suitable for inner diameter 4mm soft tube.
Air Tube is very light and soft, Professional oxygen pump hose for fish tank.
Note : Before using the bubble stone, please put it in water for 15 minutes.