How does an Airstone work
Mia Morrison
Published Feb 12, 2026
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.
How long does it take for an air stone to work?
By some reports, airstones begin to lose their effectiveness after about six weeks of use, though this varies depending on the mineral content of your water.Can an air stone replace a filter?
If you are running an air stone there is no reason (aesthetics aside) that you can’t put a sponge filter on the end.
How do I know if my tank has enough oxygen?
When oxygen is critically low, fish will gasp at the surface of the water where oxygen levels are highest. You also may notice them hanging out where the filter tumbles water back into the tank. Other signs include fast breathing, lethargic behavior or swimming off-balance.
Is an air stone a filter?
The answer is an absolute yes, it does not matter whether you have a filter in your aquarium or not, attaching an air stone makes the water circulation much better. … Adding an air stone will keep the water cleaner, provide the fishes with more oxygen, and it has a lot of health benefits for the aquatic life.
Can you have too many air stones in an aquarium?
Excess bubbles in a fish tank (no matter what size of tank) can cause bubble eye, bubble fin and bubble tail. If you find any bubbles under the skin, fins of eyes, you have too much oxygen in the tank. Remove your additional air stones and use only your hang on tank filtration system.How long should you run an air pump in a fish tank?
How long should you run an air pump in a fish tank? First, do not run an air stone when you are adding CO2. Secondly, you can run the air pump 24/7 or you can put it on a timer and only let it run during either day or night time. I would suggest running it on a timer for just as long as you are keeping your light on.
Can you put Airstone under gravel?If you step on an air stone covered or uncovered, you may break it. … Well, the air stones do not have to be buried under stone or gravel, but a rock or two will have to be placed on the tubing and air stone to keep them at the bottom of your pond, and the tubing in place. They can be buried, but do not have to be.
Article first time published onWhat is Airstone made of?
Airstones are increasingly being made from bonded glass beads and synthetic products like fiberglass. There is some controversy as to the efficiency of airstones versus the conventional powerhead system. Arguments can be made in favor of both systems, and both possess certain advantages and disadvantages.
Do air stones help with algae?
Increase the aeration and circulation in your tank with a trickle filter, surface fountain, airstone, bubble wand or other suitable accessory. More oxygenation and water movement make it harder for algae to become established.
How do you clean AirStone backsplash?
You can clean AirStone with a soft bristled brush and a solution of liquid dish detergent and warm water. Do not power-wash AirStone. Acid cleaners, bleach, paint remover or concrete cleaners should never be used on AirStone.
How long do bubble stones last?
An air stone can last for a long time as long as it doesn’t get clogged up; more so, you will likely have to worry about having to maintenance your air pump first! In general, it is recommended to clean all aquarium equipment, including your air stone, at least every six months.
Can you use an Airstone by itself?
An air stone is a small, weighted bubbler that produces very small bubbles in the water. … You can use an air stone by itself or in conjunction with a sponge filter to improve the efficiency of the filtration.
Could a fish survive in a tank full of pure water but nothing else?
Fish tanks should not be filled with distilled water because the minerals are removed from it. Minerals such as iron and calcium help the fish thrive. In addition, because fish have semi-permeable membranes, fish can experience deadly trauma in pure, distilled water.
Can goldfish live without a bubbler?
As it has been stated, goldfish do not always require an air pump to survive. It can do well in a tank that is well oxygenated for as long as it normally can. As long as there is enough surface movement that translates to oxygen, then the goldfish can live just fine without an air pump.
Why do my fish swim to the top of the tank?
Fish breathe oxygen that’s dissolved in the water. The main reason for fish swimming near the surface is to breathe more easily. The level of dissolved oxygen is higher at the top because of the interaction between the air and water that takes place at the surface.
Why are fish staying at top of tank?
A fish may linger near the surface because he’s trying to breathe more easily. Remember, fish breathe dissolved oxygen—not oxygen that is already combined in the H2O molecule. Naturally, these dissolved oxygen levels tend to be higher near the surface, where interaction between air and water takes place.
Can a fish drown?
Most fish breathe when water moves across their gills. But if the gills are damaged or water cannot move across them, the fish can suffocate. They don’t technically drown, because they don’t inhale the water, but they do die from a lack of oxygen. Fishing equipment, such as some types of hooks, can damage the gills.
Can I turn my air stone off at night?
If it is part of the filtration system (for example, the air stone powers the circulation through the filter), no. It could be too small to filter the tank but at least overnight the water moves more at the surface.
Should I leave air pump on all the time?
Ensure the pump has plenty of space to ventilate and it will not overheat. You can leave it on for 24 hours, 72 hours, or all the time. All it does is increase the oxygen content of the water.
Can I turn air pump off at night?
Air Pump Separate From Filter If you have just a good old air pump that is separate from your aquarium filtration unit, then you should be able to turn it off during the night, at least for a few hours from when you go to bed to when you get up.
How do I know if my fish is gasping for air?
Determining If Your Fish Is Gasping for Air This is seen at the surface of the water where the most oxygen is present. Fish breathe through their gills. This is seen as the side flaps close to your fish’s head spanning in and out. It may be accompanied by their mouth opening and closing.
Why are bubbles sticking to my fish?
Fish need oxygen to survive. If your tank is loaded with toxic chemicals, like chlorine and ammonia, the fish get their own oxygen by floating to the surface and blowing bubbles. This is a sign that your fish are in danger. … As the bubbles break on the surface, the water absorbs oxygen from the environment.
Can you over aerate a fish tank?
Too much oxygen in water can lead to the potentially lethal gas bubble disease, in which gas comes out of solution inside the fish, creating bubbles in its skin and around its eyes. (Excess nitrogen, however, is a far more common cause of this disease.)
Where do you put air stones in a pond?
The major advantage of using an air stone at the bottom of the pond is that as the bubbles float to the surface they bring along with them the water from the bottom of the pond which is usually low in oxygen.
Can you grout AirStone?
AirStone is a faux stone that’s lightweight and super easy to apply. AirStone is a cement product the shape and color of real stone. ~This post contains affiliate links for your convenience. Some of the other benefits of AirStone were that the stones can be cut with a hacksaw, and does not need grout.
Do air pumps add oxygen to water?
With that being said, it’s not only surface agitation that adds oxygen to your aquarium water. … The use of an air pump with an air stone will create thousands of little oxygen bubbles that drive huge amounts of oxygen directly into your tank water.