A biological filter is an essential component of any aquarium filtration system. It helps to keep the water
clean and free from harmful toxins, while also providing a safe environment for fish and other aquatic
life. The biological filter works by breaking down organic matter into smaller particles that can be easily
removed from the water. This process helps to keep the aquarium healthy and balanced, allowing fish to
thrive in their natural habitat. By understanding how a biological filter works, aquarists can ensure that
their fish tank remains in good condition for years to come.
There are several types of biological filters available for aquariums, including sponge filters, bio-balls,
canister filters, and trickle filters. Each type of filter has its own advantages and disadvantages, and the
best type of filter for your aquarium will depend on the size of your aquarium, the number of fish and
other aquatic creatures you have, and the water flow rate in your aquarium.
Biological Filtration Explained – A Detailed Guide to the Process
Biological filtration is a process used to purify aquarium water by removing harmful toxins and
pollutants. It is an important part of any fish tank filtration system, as it helps to keep the water clean
and healthy for your fish. This guide will provide an in-depth look at the biofilter process, including how
it works and what types of aquarium water filter systems are available. By understanding this process,
you can ensure that your fish have the best environment possible.
It helps to purify the water by breaking down harmful waste products, such as ammonia and nitrates,
into less harmful substances that are safer for fish and other aquatic creatures. The process is carried
out by beneficial bacteria that live in the aquarium’s filter media.
The process of biological filtration involves three key stages:
Nitrification: In the first stage, nitrifying bacteria convert harmful ammonia into nitrite. This is an
important step as ammonia is highly toxic to fish and other aquatic creatures.
Denitrification: In the second stage, denitrifying bacteria convert nitrite into nitrate, which is less
harmful than ammonia and nitrite.
Nitrate removal: In the final stage, nitrate is removed from the water through water changes or through
the use of live plants in the aquarium.
It’s important to note that the process of biological filtration takes time. It can take several weeks or
even a few months for a colony of beneficial bacteria to become established in the filter media. During
this time, it’s important to maintain good water quality by performing regular water changes and
avoiding overfeeding. Overfeeding can cause an increase in waste production, which will put more stress
on the biological filter and increase the risk of harmful water conditions developing.
Benefits of Installing a Biological Filter in your Aquarium
Installing a biological filter in your aquarium can be one of the best decisions you make for your aquatic
Improved water quality: By breaking down harmful waste products, such as ammonia and nitrite, a
biological filter helps to purify the water and improve overall water quality. This helps to keep your fish
and other aquatic creatures healthy and reduces the risk of diseases and other health problems.
Reduced stress on fish: Good water quality helps to reduce stress on fish, which can lead to improved
overall health and a longer lifespan.
Improved biological stability: A biological filter helps to establish a stable and healthy colony of
beneficial bacteria in your aquarium. This helps to ensure that the water remains clean and healthy,
even when waste products are produced.
Reduced maintenance: A biological filter helps to reduce the need for regular water changes, as it helps
to maintain good water quality and reduces the risk of harmful water conditions developing.
Increased oxygen levels: By breaking down waste products, a biological filter can increase the level of
oxygen in your aquarium, which is essential for the health of your fish and other aquatic creatures.
Lower risk of harmful conditions: By removing harmful waste products from the water, a biological filter
helps to reduce the risk of harmful conditions, such as high nitrite levels, developing in your aquarium.
In conclusion, installing a biological filter in your aquarium offers several important benefits that help to
keep your fish healthy and reduce the risk of harmful water conditions developing.
How to Choose the Right Biological Filter for your Aquarium?
Choosing the right biological filter for your aquarium can be a challenge, but there are several factors to
consider when making your decision:
Aquarium size: The size of your aquarium will determine the size of the filter you need. Choose a filter
that has a flow rate that is appropriate for the size of your aquarium.
Number of fish and other aquatic creatures: The number of fish in your aquarium will determine the
amount of waste that will be produced. Choose a filter that is capable of handling the waste production
in your aquarium.
Water flow rate: The water flow rate in your aquarium will determine the type of filter that is best for
your setup. High water flow rates are best suited to canister filters and trickle filters, while low flow
rates are best suited to sponge filters and bio-balls.
Budget: The cost of the filter is also an important factor to consider. There are many different types of
biological filters available, and some are more expensive than others. Choose a filter that fits within your
budget, but also provides the level of filtration you need.
By taking the time to choose the right filter, you can help ensure that your aquarium remains healthy
and thriving for years to come.
Aquarium Backgrounds and Biological Filters
Suppose you are worried about how the biological filter will affect your aquarium’s whole setting.
Aquadecor has ideal models made of E Ultra Flex and G Ultra Flex models. They are ready to be used
immediately since they don’t need to be silicone, so the entire space behind the background is ideal for
biological filtration. Once the background is in place, sponges, bio balls, etc. can be placed behind it. A
submersible pump can be inserted for additional water flow, so your aquarium looks flawless.
If you decide to have G models, you can also have AquaFil-BIO filters that are made of same materials,
which means they take up almost no volume at all and alos they are ready for placing a submersible
pump inside them and/or biological filter media.
Keeping your aquatic life healthy and happy is essential for their long-term survival. Installing a
biological filter is the best way to ensure that your aquarium environment is safe and clean for your fish.
Biological filtration is a vital process in maintaining a healthy aquarium and by choosing the right filter
for your aquarium, establishing a healthy colony of beneficial bacteria, and maintaining good water
quality, you can help ensure a healthy and thriving aquatic environment for your fish. With proper care
and maintenance, your aquarium will provide a healthy and thriving environment for your aquatic pets
for years to come.