Features:
Widely applicable: Suitable for hydroponic systems, circulation systems,
aquarium fish tanks, helping extend the life of your nutrient solution, keep
fish/ roots healthy and promote plant growth
Material: Durable and sturdy material, safe to your fish
Dimension: 4.1" D x 0.8" H; Fits standard airline tubing
aquarium and CO2 tubing with inner diameter of 3/16"
Stable in water: The 3 suction cups can be attached to the tank, keeping
it stable in water when bubbling
Note:
You have to soak it in water for about 60 minutes before connecting to
an air pump to run it
Includes:
1 piece of air stone with 3 suction cups