2PcsCelsiusSet Natural Wooden Bubble Stone Diffuser for Aquarium Fish (S)

Made of natural wooden material, which is soft, lightweight and . Wooden stones create very fine and even bubbles, can greatly dissolve oxygen and increase oxygen in the water. Rich color and texture design, with good elasticity, comfortable to use. Features: 1. Made of natural wooden material, which is soft, lightweight and .  2. Wooden stones create very fine and even bubbles, can greatly dissolve oxygen and increase oxygen in the water.  3. Rich color and texture design, with good elasticity, comfortable to use.  4. Suitable for marine aquariums and water. You need to use this product with the pump (Not Included).  5. It is suggest to replace the wooden diffuser one time every 2.3 months. Specification: Condition:100% Brand New Material: Wooden Color: As Pictures Shown Type: S, L(Optional) Size:  Small Length: approx.4.2cmCelsius1.7in Large Length: approx.6.2cmCelsius2.4in Package list: 2 * Wooden Diffuser Note: With the right choice of oxygen pump (below 5W), the wooden bubble can produce a large number of uniform and fine foam, thus separating impurities in the sea water. (please do not use the pump with too much volume, which may cause the wood to become loose, in this case, you need to roll a layer of water adhesive cloth and put it back in.)