Aquaneat Aquarium Air Stone Disc 4 Inch, Aerator Bubble Diffuser, Air Pump Accessories Airstones For Aquariums, Fish Tanks,Hydroponics,And Ponds

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'; Recommend air pump power > 4 W
Stable in water: The 3 suction cups can be attached to the tank, keeping it stable in water when bubbling
Package includes:
1 piece of air stone
3 pieces of suction cups
Note:
You have to soak it in water for about 60 minutes before connecting to an air pump to run it