Features:

OOTDTY

brand new and high quality

High quality air stone that will create abundant of small to tiny bubbles rather than a limited number of larger bubbles. Can be easily driven by even for NANO air pumps, suitable for aquarium, fish for Tank and circulation system.

Fits for 3/16 in (4 mm) inner diameter tubing.

Increases and reduces CO2 levels. Durable & washable. Sturdy and non toxic material is safe to your fish.

Please soak the air stone in water for about 15 minutes before usage. Remember that any air stone will need to be replaced every few months as they get clogged with dust, bacterias, and algae.

Multi Sizes: There are 4 sizes to choose for different sizes of fish tanks.

Specifications:

Material: High Temperature Fired Stone

Color: As Pictures Show

Size (Approx.):

20mm-Diameter 0.79in

30mm-Diameter 1.18in

40mm-Diameter 1.57in

50mm-Diameter 1.97in

Weight (Approx.):

20mm-10g

30mm-20g

40mm-60g

50mm-100g

Package Includes:

1 Piece Air Stone (20mm/30mm/40mm/50mm)

Note:

1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.

2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!