Marina Air Stone 4″.  Oxygenates the water and improves water circulation. Bubbles provide a visual feature to your tank, and look mysterious when the air stone is hidden under the gravel.

Moving water helps to remove unwanted gases from the tank by bringing them up to the surface.  The mixing of different layers of water can be beneficial for fish.

Air stones supply dissolved oxygen to the aquarium which particularly benefits fish such as the Corydoras Catfish.

Safe for Fresh and Salt Water aquariums.

To install, simply connect the air stone to your airline tubing.

4″ (10 cm)