Create a comfortable environment for fish - The tank bubble diffuser attaches to the air pump, the air tone strips can produce tiny bubbles, improve water movement, provide better intake oxygen to your fish, giving the fish a comfortable environment. Airstone material - The airstone bar bubbler is made of mineral and plastic, non-toxic and can be washed, which does not 'is not easy to break, remains stable at high temperatures and is durable. Easy to use - Connect the air stone to the bubble pump and place it in the aquarium so that the pump air can pump oxygen into the water. Clean regularly with a brush as they become clogged after weeks or months of use. Large quantity - 20 pieces aquarium air stone, these bubble stones can increase the levels of oxygen, enough to meet your needs, and you can share them with your family or friends. Wide range of applications - Ideal for fresh and salt water. It can be used to provide oxygen to fish and other organisms in aquariums, ponds, aquariums, hydroponic systems, fish farms and other places.