Are Bubbles in a Fish Tank a Problem?

Betta Bubble Nest

THere’s basically no aquarium out there with a healthy ecosystem that won’t feature some bubbles. Most of the time, the most obvious ones will be the ones coming out of your filter, but that should only be an indication that things are working properly. If these aren’t the only bubbles you see, then you should know that some bubbles are actually an indication that something isn’t quite right either with the water or with its inhabitants. So what is behind bubbles building up inside your fish tank and how will you know if they are a sign of a healthy or ill ecosystem? This article will explain everything in detail.

Bubbles on plants

As I already said, bubbles can be an indication of a normal working tank that goes through its healthy cycles. This is especially the case if you have plants in the tank, which produce oxygen and will sometimes hold it on their leaves as bubbles. Most of the time, these will dissipate at some point and the oxygen inside them will just go into the water. This is a good thing and nothing to worry about. Fish can take oxygen through their gills right from the water and use it to survive.

You might also like my articles on marimo moss balls in aquariums, green water in aquariums, and what to feed tadpoles.

Covering the surface

So what would happen if your fish won’t have enough oxygen for normal functioning? You will usually see that your tank doesn’t have enough oxygen if there are bubbles floating on top of the water and some of the swimmers come to the surface often. They will usually come to the surface for a breath of fresh air because they can’t get enough from the water. There are some types of fish who would this as normal behavior, just like other nonfish aquarium inhabitants like frogs do, so this alone shouldn’t be a reason for concern. But when you see a lot of fish coming to the surface and a buildup of bubbles, then you should really consider reexamining the water. YOu will probably have to either fix the filter or change the water. When changing the water, slowly pour the fresh one for a better effect. There can also be some other problems, like an overcrowded or dirty tank.

Clinging to fish

Air Bubbles Attached to PlantsThis is where you should get alarmed. You will have to call an expert and check out the bubbles to find out what the real issue is. This is because the causes can be either gas bubble disease or ich, both very severe issues. If you conclude that a type of parasite like ich is at the root of the problem, then a few simple conditioners might be enough of a cure. In the case of gas bubble disease, this will usually take place when your aquarium goes through too many changes in pressure and temperature. To fix this, try to submerge the fish having this condition in high-pressure, very deep water and then call a fish doctor and ask for help.

Bubbles that won’t pop

These might not always look like individual bubbles and can even look like a type of foam, but this is certainly not good news. The first thing you will have to do is clean the tank to figure out why it’s getting this dirty. This problem should also make you check the filtration system because it might need an upgrade or even a complete replacement. Go for a partial water change and also deep-clean your whole aquarium, including accessories and gravel. Keep in mind that a complete water change will usually bring more problems than it will fix. which is why this should be avoided except for a few extreme emergencies.

In a betta tank

In the case of betta fish, bubbles might be a sign of them being healthy. This is a normal process of their nesting, especially when you have betta females that lay eggs inside a bubble nest. This is to store them in an oxygen-rich and safe place until they are ready to hatch. You might even be able to see a betta fish spitting out bubbles of air, so you know for sure where they are coming from.

Most of the time, some bubbles in the aquarium shouldn’t be a reason for concern. Check them out for any particular signs of concern and try to find out exactly how and where they are forming.

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