The Aquaponics Bio-Filter Explained

Most people who start an aquaponics system are eager to understand how the system works and what they can do to make it better. This article will answer some of these questions, while also giving you some ideas on how to improve your aquaponics setup

First off, let’s talk about bio-filters in aquaculture and why they’re so important for keeping your fish healthy.

Aquaponics System | Trial Biofilter and System Update
Key Takeaways
Understanding the importance of bio-filtration in aquaponics systems
Different types of bio-filters and their mechanisms of operation
Benefits of using bio-filters in aquaponics systems
Factors to consider when selecting a bio-filter for your aquaponics system
Tips for maintaining and optimizing the performance of your bio-filter
Common troubleshooting and maintenance issues with bio-filters and how to address them

How Much Bacteria Do You Need In An Aquaponics System?

  • The more bacteria, the better.
  • The bacteria will help to keep your water clean by consuming fish waste that would otherwise build up in your system.
  • The bacteria will also convert ammonia and nitrites into nitrates, which are essential for plant growth.

Aquaponics systems are a highly efficient and sustainable way to grow plants at home. Learn more about the technology behind this amazing system and its benefits with our guide on The Technology Behind the Aquaponic Garden.

What Is The Best Media For Aquaponics?

Filter media is a material used to filter particles from the water. The best filter media for your aquaponics system is one that can hold a large volume of water, support a large amount of bacteria, and be cleaned easily.

How Can I Make My Aquaponics Water Clear?

There are several ways to clear your water:

  • Use a water clarifier
  • Use a water filter
  • Use a water pump
  • Use an aerator (also known as air stones)

Note that using any of these methods will need to be done regularly, to maintain clean and healthy fish.

Betta fish can be a great addition to your aquaponics system, but understanding their needs is essential. Check out our guide on Are Betta Fish Good for Aquaponics? to learn more about the benefits and considerations of owning betta fish in an aquaponics system.

Can You Make Money With Aquaponics?

You can make a lot of money with aquaponics. You can also lose a lot of money.

In the United States, most people who have an interest in aquaponics are going to be hobbyists. If you want to invest in an aquaponics system, it’s important to keep your expectations realistic when it comes to making money right away. 

Most people start off spending $5,000 on their system and end up losing money at first because they didn’t use proper methods or didn’t understand how much work is involved in growing fish and plants together.

When I started my first commercial aquaponics operation 11 years ago, I spent $50,000 on the whole thing and this was before expenses such as rent or utilities! 

I worked hard every day for almost two years before turning a profit from my business (I had already been running my home setup for about five years). 

It wasn’t easy but eventually, things started working out financially once I learned how much time and energy goes into keeping any large-scale system running smoothly 24 hours per day seven days per week 365 days per year (including holidays).

Whether you’re an experienced gardener or just starting out, our guide on Aquaponics: The Complete Step-by-Step Guide is a great resource to help you build a successful aquaponics system in your home.

How Often Should You Feed Fish In Aquaponics?

It’s important to feed your fish at the same time every day and give them the same amount of food every day. The best way to do this is by using a timer that controls when you turn on and off your water pump system.

Another option is to set up an automatic feeder for your fish tank so that it can be programmed to dispense food at certain times of day or night, based on how many days there are in a week (7), months (12), weeks (52), months (12) or years (365).

Is Aquaponics Better Than Soil?

Aquaponics is an easy and effective way to grow plants, fish, and both at the same time. Aquaponics uses a “closed-loop” system where the water from your fish tanks returns to your plant roots for nutrients. 

The water then goes back into the tank where it is filtered by bacteria, before returning as clean water for your plants.

The benefits of using aquaponics over traditional gardening methods include:

  • You can grow more plants with less space than traditional gardening methods allow
  • It’s easier to maintain than soil gardens because you don’t need to add fertilizer or chemicals every few weeks as you would in soil gardens

If you’re thinking about setting up an aquaponics system and want to ensure the safety of your fish, our guide on What is Aquaponics and is it Safe for Fish? can help answer some of your questions and provide valuable insights about fish and plant health.

Types of Aquaponics Systems
Media-Based Aquaponics
Deep Water Culture Aquaponics
Nutrient Film Technique Aquaponics
Vertical Aquaponics
Hybrid Aquaponics

What Is A Bio Filter In Aquaculture?

In aquaculture, a biofilter is a biological filter that removes nitrates and other pollutants from water. It is an important part of an aquaponics system since it removes ammonia and nitrites from the water before they can be converted into poisonous chemicals by bacteria. 

In essence, it works in much the same way as a home aquarium filter does: by mimicking natural ecosystems where plants remove nutrients from water through photosynthesis so that fish can thrive in clean conditions.

How Do You Clean An Aquaponic Tank?

You can clean your tank with a gravel vacuum and net. You can use a siphon to suck out all the gunk at the bottom of the tank. 

You can use a hose to suck up all the gunk that has settled on top of the water and put it in another container. If you want to get rid of algae, you can use a pump or skimmer with an air stone (if you have one).

What Is The Best Fish For Aquaponics?

As for the best fish for aquaponics, you want to start with a fish that is not too big. You also need a fish that is easy to breed, easy to maintain and easy to eat. For example, if you are trying to feed your family then maybe you want something like tilapia or perch. 

If you are trying to sell your products then perhaps trout would be a better choice because they are more expensive and therefore worth more money when sold at market

Common Aquaponic Plants
Leafy Greens (Lettuce, Kale, Spinach)
Herbs (Basil, Mint, Cilantro)


So now you know how much biofilter you need, what the best media is for your aquaponics system, and how often to feed your fish. You can also make money with aquaponics, but it takes time and patience so don’t expect overnight success. 

The next question is what kind of fish should we use in our system? Well, that depends on where you live and what kind of food source they prefer but generally speaking Tilapia or Barramundi are good choices because they grow quickly.

But still taste like their natural wild counterparts which means they have less fat content than other types of fish like salmon which tend not be available locally unless shipped from another state or country altogether!

Maintaining the quality of the water in your aquaponics system is vital to the health of your fish and plants. Discover how often you should change your water and other tips on How Often Do You Have to Change Water in Aquaponics? with our helpful guide.

Further Reading

Here are some additional resources related to aquaponics and biofilters that you may find helpful:

Aquaponics: The Complete Step-by-Step Guide – A comprehensive guide to aquaponics that covers everything from setting up a system to maintaining it and growing plants and fish.

What Vegetables Can Be Grown in Aquaponics? – A list of vegetables that are well-suited for growing in an aquaponics system.

How Do You Grow Vegetables in Aquaponics? – A guide to growing vegetables in an aquaponics system, including tips for choosing the right plants and maintaining the system.

What Is an Aquaponics System & How Do They Work? – An overview of aquaponics systems, including how they work and the benefits of using them.

How Often Do You Have to Change Water in Aquaponics? – An explanation of the water cycling process in aquaponics and how often you need to change the water in your system.

What is an Aquaponics Biofilter? – A blog post that explains what a biofilter is and how it works in an aquaponics system.

Aquaponics Biofilter: What You Need To Know – An article that provides an overview of biofilters in aquaponics systems, including how they function and how to maintain them.


What is aquaponics?

Aquaponics is a system that combines aquaculture (raising aquatic animals such as fish) and hydroponics (growing plants in water) in a symbiotic environment. The waste produced by the fish is converted into nutrients for the plants, and the plants in turn clean the water for the fish.

What is a biofilter in aquaponics?

A biofilter in aquaponics is a component of the system that houses beneficial bacteria that convert fish waste into nitrates, which are then used as nutrients by the plants.

How does a biofilter work in aquaponics?

A biofilter works by creating a surface area for beneficial bacteria to grow and thrive. These bacteria convert ammonia produced by fish waste into nitrates, which can then be used by plants as nutrients.

Why is a biofilter important in aquaponics?

A biofilter is important in aquaponics because it helps to maintain water quality by removing harmful toxins produced by fish waste. It also provides a source of nutrients for the plants, which can improve their growth and health.

How do you maintain a biofilter in aquaponics?

Maintaining a biofilter in aquaponics involves monitoring water quality, cleaning the filter media, and ensuring that the bacteria are thriving. Regular system checks and adjustments are also necessary to prevent problems from arising.