We choose this best quality air stone that will create an abundant cascade of small to tiny bubbles rather than a limited number of larger bubbles. Can be easily driven by even the Nano air pumps, suitable for aquarium, fish tank and circulation system.
MODEL: ASD-040. Increases oxygen and lowers CO2 levels. It is an important instrument to keep aquatic fish for respiration process.
Durable & washable. Sturdy and non-toxic material is Safe to your fish.
Fits for 3/16 " / 4 mm inner diameter tube. Please soak the air stone in water for about 30 minutes before usage.
Comes with 8PCS air stones. Size: approx. 1.6 x 0.6"/40 x 15mm (D X H).