Item Feature:

Premium quality airstone diffuses water in every direction. A great way to properly aerate your hydroponic growing system.
Air stone cylinder produces fine bubbles for oxygen replacement, helps accelerate oxygen replenishment and release carbon dioxide build-up.
An ideal accessory for added aeration, circulation and decorative highlights. It creates a dazzling underwater scene while also increasing surface agitation.
Size: 4 x 2inch / 100 x 50mm (H x D). Fits for 4mm air tubing. Simply attach airline tubing to the air stone inlet and place it in desired location.

Note:

Please soak the air stones in water for about 30 minutes before usage.
If it doesn't have bubbles in one part, please change the air pump of higher power.
After a long-term use, clean your stone regularly so that it will be most effective.
Replacing the air stone every six months as they get clogged with dust, bacteria, and algae.

• Oxygen Replacement -- An ideal way to add oxygen and circulate nutrition to your hydroponic growing system.
• Versatile Airstone -- Rising bubbles enhance vital hydroponic system aeration & water movement, versatile air stone for decorative & functional air bubbles.
• Premium Quality -- Made of safe, washable and non-toxic mineral material. Durable bubble diffuser air stone provides exceptional results for Hydroponic growth.
• Size: 4 x 2inch / 100 x 50mm (H x D). Fits for 4mm air tubing.
• Note: Please soak the air stones in water for about 15-30 minutes before usage. 4x2 Inch airstone needs the air pump of at least 10W.