4pcs 4cm Airstone for Aquarium Air Bubble Stone Oxygen Stone for Fish Tank Round Oxygen Diffuser

Description

This item is an airstone which is sintered at high temperature. It looks like a round cake with a air pump interface. With the delicate surface and even air outlet, it can be used to transport oxygen to the fishes and other living things not only in fish tank, but in pond and aquarium and other places.
 
Features 
 
- Color: As shown in the picture.
- Material: Sand.
- Size: 4 * 4 * 1.5cm/ 1.6 * 1.6 * 0.59 inch (L*W*H).
- Easy to use: Connect to the air pump and put it into the water, helping the air pump to pump oxygen into the water.
- High quality and hard material, good for long-term use and safe for living things.
- Can be washed repeatedly.
- Beautiful air bubbles add beautiful scenery to the aquarium and fish tank.