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What is Aquaponic Gardening?

By Jeff and Amy Davis
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Aquaponic gardening is a growing trend that allows families to create a self-sustaining environment that grows vegetables, fruits, flowers and more with as little maintenance as possible.

The first time I was told about aquaponic gardening, I thought it was going to be very dirty and moldy but was pleasantly surprised to find that it wasn’t like that at all. Aquaponic gardens can be as small or as large as you’d like it to be. They create enough food in a small space and require very little maintenance. Below, we’ve outlined a few items to consider on whether an aquaponic garden would work for you.

Aquaponic GardeningBest of Both Worlds
The Aquaponic Gardening Community defined aquaponics as the following:

Aquaponics is a cultivation of fish and plants together in a constructed, recirculating ecosystem utilizing natural bacterial cycles to convert fish waste to plant nutrients. This is an environmentally friendly, natural food-growing method that harnesses the best attributes of aquaculture and hydroponics without the need to discard any water or filtrate or add chemical fertilizers.

Basically, aquaponic is a food production system. It combines aquaculture (raising animals such as fish, prawns or snails in water) with hydroponics (growing plants in water instead of soil). The goal of aquaponic is to create a fully self-sustaining system of food.

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Both aquaculture and hydroponics require a lot of intervention to maintain. For example, in aquaculture, you have to ensure that the waste from the fish is removed before it builds to toxic levels. In hydroponics, one has to continually replenish and balance chemical nutrients or the plant will die. With aquaponic however, the two systems balance each other out to create a self-sustaining environment.

How does it work?
Aquaponics isn’t that hard. Fish produce waste that turns into nitrate and ammonia. If this builds up too much, it hurts the fish. However, this nitrate and ammonia acts as a fertilizer for the plants and prevents the build up. As the plants suck up the nutrients, it cleanses the water for the fish.

Once the system is setup correctly, only small amounts of water are needed to keep the system going. When the water evaporates naturally, it needs to be replaced. The most common fish used in an aquaponics system is tilapia because they require very little maintenance and reproduce very rapidly.

Before You Get Started
Before you start gathering tanks, pumps and fish, there are a few things you need to consider:

Where. Where will your system be located? Many aquaponics systems are portable (might take you a whole afternoon to move it, but still portable) and are great for areas where outdoor gardening is prohibited by seasons. You’ll need to consider how large your system will be and where you can easily house it. Perhaps a greenhouse? A basement with lighting? On another property? All of this depends on how large your aquaponics system will be.

When. Many fish hatcheries won't ship fish during the winter months. Some plants are hard to establish during colder times of the year. It takes some time to get the bacteria to grow in your aquaponics ecosystem. All of these are considerations on when you’ll be starting your aquaponics system.

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Who. Who will be in charge of taking care of the system? Will children be around the system? If so, this may impact how tall you create the system, if it has windows, how often you want to cultivate, etc.

Building the Structure
Before you buy any fish or add water, you’ll want to make sure that your system is built correctly. You can build a basic structure like the one below:

Aquaponic Basic Design

In this design, the grow bed is placed above the fish tank. Water from the fish tank is pumped up into the grow bed. The grow bed to fish tank volume ratio should be equal. If you decide to add another growing bed, you’ll need to add a sump tank with extra water like the image below:

Aquaponic Plus Design

There are a lot of great aquaponics designs out there that are quick, easy and clean. Feel free to share your designs below in the comment section.

Structural Requirements for Tank. When choosing tanks and other materials to build your structure, be sure to pick items that are waterproof and can handle a lot of weight. Gallons of water can add up quickly and weigh down a lot on your structure. Avoid plastic containers too.

You should also use non-toxic, food safe materials. Since you’ll be growing food in this structure, you don’t want to contaminate the food. This means using non-toxic and inert materials to create your structure.

Many people use large 50-, 30-, or 250-gallon tanks to house their fish and other aquaponics materials.

What Kind of Fish Will I Need?
There are a few different types of fish that work well in aquaponic environments. Here are a few:

Tilapia. Tilapia are the most popular aquaponic fish because they are easy to grow, like warm water and do not require high oxygen. They mature very quickly too.

Goldfish. Goldifish, like Tilapia, are very easy to grow and maintain. There are more commonly used by people who don’t eat their fish.

Aquaponic PlantsCatfish. In Florida, Tilapia are illegal. So, many people use catfish instead.

What Kind of Plants Should I Grow?
Most any type of plant can grow in an aquaponic environment. In fact, the only ones that don’t grow well in an aquaponic system are plants that require a pH environment much above or below 7.0. So, things like blueberries or azaleas won’t grow very well in a balanced pH environment.

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Things like carrots and potatoes will have a harder time expanding into a mature state with aquaponics. Items like salad greens, tomatoes, peppers and strawberries all grow very well in an aquaponics environment.

The plants are usually grown in a rocky structure with water flowing between the rocks.

Your Thoughts
So, what do you think? Have you tried creating an aquaponic garden in your home? Do you think it’s an option for self-reliant living? Comment below to tell us your thoughts.

Special thanks to Sylvia Bernstein, author of Aquaponic Gardening, for resources in this article.

9 years ago
Comments
Raymond
9 years ago at 3:35 AM
The Ready Store comes up with such great ideals. After reading about the aquaponics gardening my thoughts are it is a great ideal and is a very good for anyone and self reliant living.
Dawn Rodriguez
9 years ago at 6:40 AM
I am in the process of fine tuning my mini system that my son designed. I have had limited results, but I did actually get some things to grow and finally some if the fish begin to thrive.. I am only using a 10 gallon tank, but finally have things balanced.
Angelie
9 years ago at 10:08 AM
Although this sounds highly attractive and I would very much love to entertain this idea and put it to work, I was wondering if anyone had any ideas as to how to prevent this set-up from becoming a mosquito breeding ground in the spring and summer months of the Southern US?
Michelle
6 years ago at 7:50 AM
Mosquitos bed in standing water. The water in this system works be continuously moving, so they should not be a problem.
gary carbaugh
9 years ago at 10:26 AM
I have a three thousand gallon water garden with Koi. It is 10'x25'x 3'deep. Can I have a floating bed on half of the surface space. Pumping water in the top of the bed and allowing it to filter through the bottom?
Tom Wallace
9 years ago at 2:27 PM
Does the water run continuously between the fish tank and the grow bed? Or do you need to attach a timer to the pump to run for a certain period of time...then shut off for awhile? Thank you.
Jackie Allen
9 years ago at 6:38 AM
I would like to be able to BUY a ready made system that just needs to be put together.
JOHN BIRCH
9 years ago at 1:05 PM
WHERE CAN I BUY A READY MADE, OFF-THE-SHELF AQUAPONICS SYSTEM?
Chris
9 years ago at 8:02 AM
Angelie - You don't really need to be worried as an aquaponic system is constantly moving water. mosquitos breed in stagnant water. Although, if you are concerned with the possibility of mosquitos you would use mosquito fish to fight the problem with. There are just common minnows found here in Florida and eat mosquito larvae that sits on top of the water.
Ray
8 years ago at 12:43 PM
Can you have more than one variety of fish sharing the habitat--ie Tilapia and Catfish and minnows? Are the prawns grown in a fresh water habitat or salt water?
gsteph
8 years ago at 5:51 AM
In the photo above...what is the large flat bright blue 'tank' made of? sure looks like some kind of plastic!
Bryan
7 years ago at 3:51 AM
Make the pumps solar/12v/battery powered and you can have a totally off grid, year round food supply!
Carol
7 years ago at 11:42 AM
Hi Yall! I was wondering if any of you have ever tried any of the indoor mylar Reflective Hydroponic Grow Tents? We just bought one at amazon.com. It hasn't arrived yet, but if any of you have used this typ of indoor grow system, I would really love feed back about your experience with it! Thanks to all who answer!
Jake
6 years ago at 3:01 PM
I have found that Friendly Aquaponics from Hawaii are the most experienced and technically superior operators out there. They are also incredibly generous with their information and pride themselves on helping people get the maximum performance from their systems. They also offer classes for the more serious operators, but they have historically been too far west and north for me to travel.
sozialy
4 years ago at 2:05 PM
Why users still make use of to read news papers when in this technological world all is presented on net?