Airstone
Airstone is a porous stone or rock-like object that is typically used in aquariums to increase surface area for beneficial bacteria to grow, improve water circulation and oxygenation, and create decorative bubbles in the water.
Airstone is a porous stone or rock-like object that is typically used in aquariums to increase surface area for beneficial bacteria to grow, improve water circulation and oxygenation, and create decorative bubbles in the water.