We choose this best quality air stone which will create an abundant cascade of small to tiny bubbles rather than a limited number of larger bubbles. Can be easily driven by even Nano air pumps, suitable for aquarium, fish tank and circulation system. MODEL: ASD-040. Injection volume: 2 l/min, suitable for approx. 30-60cm fish tank. Recommended air pump power: 2W - 4W. Suitable for 4mm inner diameter tubing. Increases oxygen and lowers CO2 levels. Durable and washable. Sturdy and non-toxic material is safe for your fish. Please soak the air stone in water for about 30 minutes before use. Remember that any air stone will need to be replaced every few months as it becomes clogged with dust, bacteria and algae. Comes with 4PCS air stones. Size: approx. 40 x 15 mm (D x H). Delivery quantity: 4pcs Welcome to meet
