-Diameter 10/13cm air stone disk suitable for 0.16"/4mm inner diameter tube

-Diameter 20cm air stone disk suitable for 0.31"/8mm inner diameter tube

（Please verify the size you need, and we do not accept returns due to the size of the interface）

-Safe & High-Quality Material: The air disk uses finely compressed material so the bubble is small, non-toxic mineral material keeps fish healthy and safe

How to Use: To connect to the air hose and pump, it can be used longer with good sufficiency if you clean the surface of the dispersion tool often

Versatile Airstone: Rising bubbles enhance vital hydroponic system aeration & water movement, They help keep healthy fish and add to the beauty of the aquarium

-Diameter: approx10cm/13cm/20cm

-Color: Gray + Black

-Main Material: Mineral & Plastic

-Recommended Air Pump Power: More than 15 W.

-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, bacteria, and algae

-Pneumatic discs with diameters of 10cm and 13cm are suitable for hoses with diameters of 4mm

-10/13/20cm Air Stone

Please allow a 1-3 cm difference due to manual measurements.

Please note that a slight colour difference should be acceptable due to the light and screen.