When an air stone is attached to an air pump outside the tank, it starts to produce tiny bubbles. Within a few seconds, those tiny bubbles which are filled with oxygen will gradually fill up the tank. The bubbles produced by the air stone do not only fill the tank with oxygen, but it also helps circulate the water.

Do air stones need a pump?

Adding an air source to your fish tank is very easy – all you need is an air pump to push air into the water, airline tubing for the air to travel through, and a check valve to prevent water from flowing into the tubing. … An air stone is a small weighted bubbler that produces very small bubbles in the water.

How often do you need to change an air stone?

It is recommended to change the air stone every three months in order to maintain proper functionality of your tank. This will give you peace of mind that your fish will be happy and healthy.