Pack of 12 round air stone gradually diffuse air into the tank.
Fine bubbles provide oxygen for fish to breathe, and lower CO2 level.
The air stone fits for using in 11.8-23.6''/30-60cm fish tanks and diameter 0.15''/4mm soft tube.
Durable and sturdy material, washable. Safe and non-toxic to your fish.
Perfect for aquarium, fish tank, pond, hydroponics.
Material: Mineral stone + plastic
Size: approx. 0.9 x 1.2''/25*30mm (D * H)
Pack of 12 is convenient for you to replace the old.
Please soak the air stone in water for about 30 minutes before usage.
Remember that any air stone will need to be replaced or washed every few months as they get clogged with dust, bacteria, and algae.
12 x round air stone "
BornFeel Aquarium Air Stone 12pcs Bubble Diffuser Cylinder 0.9 x 1.2'' Airstones for Hydroponics Fish Tank Pump Aerator - B07FKHDHG3