【Non-toxic mineral material】The airstones are made of high-quality non-toxic minerals, and the stones are strong and durable. 【Airstone Size】15 x 25mm/0.59*0.98inch ( DxH ). Recommended air pump power: about 2W-4W. 【Practical and beautiful】 The blue air stone can produce smaller and denser bubbles than other products, so it can double the dissolution rate of oxygen in water, allowing oxygen to be released more efficiently. 【Maintain Oxygen Supply】The air stone can continue to provide oxygen to fish and other aquatic animals. If you are a water animal lover, the air stone is a must-have for your fish tank, pond, fish tank to help your fish breathe better. 【Wide Applications】We offer 12 pieces of air stone for you Aquarium air vents. These air stones can be used in aquarium, pond, freshwater, saltwater, hydroponic or aquatic farm.
