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Why There are Bubbles on Aquarium Water?

Why There are Bubbles on Aquarium Water?

Despite having done everything right in an aquarium, there are possibilities of noting the formation of bubbles on Aquarium Water. Some might be small and harmless, while others might be excessively huge and cause extreme damage to the death of fish. These bubbles are usually caused by several reasons, with some even coming out of mistakes done unknowingly.

This discussion will enable you to understand what causes the bubbles in an aquarium tank in detail.

Here the Reason Why Bubbles on Aquarium Water

1. Creation from specific types of fish

Creation from specific types of fish

Some fish types have the habit of creating some form of bubbles to attract mates such as the bettas and gouramis. They will look like a mass of orbs floating on the water surface.

They could also be attached to the plants in the fish tank, with some cases seen attached to the nests. However, this is normal and should not raise the alarm as they are supposed to go away after some time.

2. Aquarium plants pearling

Aquarium plants pearling

During photosynthesis, aquarium plants usually produce oxygen. These bubbles in the form of jewel-like bubbles will rest on the leaves of plants in the tank. This condition is a good sign showing that the plants are healthy.

Failure to notice pearling is a source of concern for the aquarium owner, which will need immediate attention. This is usually a result of the water being overly saturated with vast amounts of oxygen, which is healthy.

Check out: Top 10 Best Cheap Aquarium In 2022

3. Rapidly pouring soap water into an aquarium

Rapidly pouring soap water into an aquarium

In the event that you accidentally pour soapy water into an aquarium fast, there is the possibility of the formation of foam. At times it remains there for a long time, which is an issue of concern. This is one of the most dangerous things that can ever be done with the consequences of death on your finned friends.

To avoid such situations, it is advisable to never use household items during cleaning or refilling. Always use a unique aquarium bucket to fill the tank and have it done slowly. Additionally, avoid touching the water with unclean hands as they could introduce soaps particles leading to the formation of these bubbles.

4. Excess protein levels in the water

Excess protein levels in the water

When the aquarium water has an excess of proteins, the bubbles produced through other safe means could are coated, limiting their popping.

The best way to ensure that there are limit amounts of protein levels and consecutively formation of bibles is regular cleaning. Have the filters cleaned while debris such as a dead fish removed immediately.

5. Poor water quality

Poor water quality

One of the things that must always be stressed is the use of treated or conditioned water instead of tap water. When you decide to add tap water into the aquarium, there is the possibility of introducing chlorine.

Chlorine is not easy to eliminate and has direct adverse consequences on the fish, causing redness and eventual death. Bubbles are going to form if the quality of water used contains chloramine, if not treated.

The chain reaction starts the moment such additions are done where fish generate complications reading to their death and thus bubbles out of excess proteins.

Use dechlorinator to ensure that there is the removal of those substances that will lead to the formation of harmful water bubbles.

Don’t forget to check: How To Add Water To An Aquarium Correctly?

6. Improper aeration

Improper aeration

The addition of toxic chemicals such as chlorine and ammonia causes a shortage of oxygen for the fish. When this is the case, you will note the formation of bubbles at the top parts as the fish try to get oxygen.

This is an issue of concern and must be immediately rectified as it adds stress on the finned friends and could even lead to suffocation. Try creating a system of oxygen flow that brings in fresh oxygen into the tank fluently.


Even for the well-maintained aquariums, there are always the possibilities of these bubbles forming. However, ensure that there has been an investigation on the real cause of such an occurrence. Always ensure that fish receive sufficient oxygen without them straining. Make deductions to things that might be triggering this occurrence and have an operational and effective aeration system.

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