Usually, an aquarium will have enough oxygen for your fish to live. This water will contain a lot of dissolved oxygen. A good way to quickly add more oxygen to your aquarium is by performing a partial water change with colder water. This is also a reason why fish can suffocate in summer times if the aquarium water accidentally warms up too much. Warmer water can hold less oxygen than colder water. If you use an air stone with tiny bubbles, they’ll float upwards slower, leaving more time for the oxygen to dissolve.Īeration in the tank’s water also depends on other factors, such as aquarium temperature and water circulation. With large bubbles, the air will race to the surface of the aquarium, leaving little time for any diffusion of the oxygen from the air into the water. The size of the bubbles does have an effect on how effective they are for water aeration. However, they’ll not provide much oxygen if the air stone produces large bubbles. Aquarium bubblers are popular in larger aquariums. It creates a better and healthier environment. This provides aeration that can in turn help your aquarium fish. Though tiny bubbles and water movement, oxygen is dissolved. Through the bubbles of the air pump, oxygen is dissolved into the tank’s water. A common reason why people add a bubbler to their aquarium is to increase oxygen levels. Are Bubbles Important in a Fish Tank?īubbles aren’t essential for fish tanks, but they can serve a purpose. This way you can filter huge numbers of tanks on one pump, maybe even more than 50 tanks. If you want to set up a fish room with a lot of tanks, you can have one big air pump installed that powers the sponge filters that are in all the tanks. Maybe not ideal for tanks that you have in your bedroom for example. If you want you can check out the latest price on Amazon here.ĭisadvantages to using a sponge filter is that you will have to have an air pump running 24/7 which can get noisy. If you have a small tank (up to 10 gallon / 40 liters) these are definitely something to consider. These air powered sponge filters are also super cheap. Another advantage is when you want to set up a lot of tanks in the same room, this is what stores or super dedicated hobbyist use. If you let the water that is sucked in flow through a sponge, beneficial bacteria will start to grow on the sponge and eventually these bacteria will be able to break down the ammonia in your tank.Īdvantages of a filter like this is that you kill two birds with one stone, you have a filter and you have the desired surface agitation. The air pushes the water upwards creating a drag, sucking in more water at the bottom. A sponge filter is a filter that is solely powered by the air bubbles generated by an air stone and an air pump. This is another application of an air pump that you can use for your aquarium. You can also prevent this by aiming your filter at the water surface. This is not directly a problem but it is not desired. If you do not this, you might get a biofilm layer that is building up at the surface because it is not moving. What you can do is run the air bubbles at night. If you are adding CO2, you will have made sure that your system is not adding CO2 at night because plants do not need CO2 at night. And finally, increased gas exchange means more CO2 leaving your water. With increased surface agitation comes increased gas exchange. Do Not Use an Air Pump In Combination With CO2Īs read in the previous part, adding an air stone will increase surface agitation. If you do not want the sound of the output water hitting the water surface you can have the output submerged and pointed at the water surface. Adding an air stone connected to an air pump will introduce surface agitation and therefore increase gas exchange at the surface.Īnother way of increasing surface agitation without air bubbles is having the output of your filter breaking the water surface. If the surface of the aquarium is completely still, the gas exchange that is happening is not sufficient for the health of your fish. If the surface is agitated, the gas exchange will increase. Carbon dioxide (CO2) leaves the water and oxygen enter the aquariums water. You probably will have heard or seen this term before, but what exactly does it mean.Īt the surface of the water, water and air exchange gases. Another way to permanently increase the gas exchange in your aquarium is by adding or increasing surface agitation in your tank.
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