Jan 21 2008
Aquaponics Technology For Growing Plants & Fish
While researching about Hydroponics & Aeroponics, I found an interesting technology I’d never heard about. It’s called Aquaponics and it incorporates the growing of food in a hydroponic setup with the raising of fish in aquaculture. It’s an extremely innovative way to grow both plants and fish, and I believe it has the potential for use in commercial operations - It is being used by a few commercial operation in Australia and the United States, and I’m assuming there are other places using it as well. For the most part, information I’ve found on the subject indicates most of the people using aquaponics are doing so in their backyards in smaller operations for personal food consumption.
How It Works
It’s a unique symbiotic relationship for both the plants and the fish. The fish effluent (waste) accumulates in a closed system. This effluent is high in nutrients that plants can use to grow, but the high effluent content can be toxic to the fish. So, the effluent water is pumped out of the tank into a grow bed containing plants. The plants then use the nutrients in the water and the “cleaner” water that filters down through the grow bed is then recirculated back into the fish tank. The fish create fertilizer for the plants and the plants clean the water for the fish.
Benefits of Aquaponics
- Organic fertilizer for plants is created by fish.
- Less water is required due to the reusing/recycling of water.
- More efficient method of growing crops (less space needed).
- Environmentally friendly.
- Aquaponic operations can be built close to cities (fresher food that travels less miles).
- No chemical fertilizers or pesticides/herbicides are needed.
The system can be expensive to begin due to the various number of parts needed to do both hydroponics and aquaculture. Each system can have varying results as well.
What Can Be Grown?
In the hydroponics part of an aquaponic system, you can grow almost anything - herbs, flowers, vegetables and fruits are commonly grown. Tubers such as potatoes don’t grow very well - but that’s fine - as tubers are usually an inexpensive crop. When using hydroponics in an indoor greenhouse, the point of the operation is to control the environment for growing the fruits or vegetables so that a premium quality crop can be grown to fetch top dollars at the market.
For fish, the most common fresh water fish grown in aquaponics is Tilapia. Tilapia has a very mild taste and has a nice flaky texture and is low in fat. Other fish grown by Australian Aquaponic enthusiasts are Silver Perch, Murray cod and Barramundi. Fish such as catfish and trout can also be grown. It is best to choose a variety of fish that is a relatively hardy species so that losses can be kept to a minimum.
Why Aquaponics for a Business?
Aquaponics has a bright future ahead of it for several reasons. An indoor hydroponics operation can be used to grow premium crops efficiently, so a farmer is able to make more money. Fish are also grown in the system and are an added bonus that can fetch good prices in the market as well. The system is an efficient way to use water and reduce the number of miles food travels to reach customers. We need to get better at producing food while leaving a smaller footprint on the environment. As the human population continues to grow, we need to begin exploiting technologies like this. Our traditional farmlands are becoming depleted of nutrients and are heavily saturated with petrochemicals. To top it off, wild fish stocks are quickly being depleted.
Not only does aquaponics have the ability to grow food where it normally can’t be grown, but it may be some of the same technology that allows space travel and an eventual colony on a distant planet. This is serious technology with many practical uses.
More Information
If you would like more information on aquaponics, we recommend the following sites:
www.backyardaquaponics.com/forum/ - The Best Forum I’ve Seen -
That should give you a good place to begin your search for more information. Many aquaponic systems are used so people can grown their own fresh organic food. Commercial operations are also feasible. We suggest you start your own small aquaponics system at your home to experiment and learn about the technology before starting a large commercial venture.
Ideas for Aquaponics
- We all know someone that has spent money at the Health Food store on some dried herbal remedy or some herbal extract for an illness. The alternative health field is growing by leaps and bounds as people realize that many of the chemical based drugs we are told to use by our doctors have too many side affects. Sometimes looking to nature to find a solution to a problem is the best thing one can do and there are plenty of useful herbs. Using aquaponics, you could start a herb company that grows and processes herbs into dried, powder, liquid extract and pill form for sale in the Health Food Industry.
- Another idea is to start an aquaponics operation to grow the best flowers. Simple enough.
- How about using aquaponics to grow the freshest foods - lettuces, spinach, tomatoes, cucumbers, herbs for food, etc, etc. This is also simple enough and is the main use of aquaponics.
- How about using aquaponics to grow wine grapes and then produce wines? You could theoretically have an aquaponic vineyard where you produce wines. You could even produce wines from other fruits and vegetables. With a controlled environment, you could produce some of the best quality wines in the world.
- What about a “Pick Your Food” style greenhouse operation where the customers get the pleasure of picking their own food?
- What about starting an organic food company that manufactures organic food using only ingredients grown in the aquaponic setup contained on-site?
- You could raise and fillet fish on-site and then sell at the market for a premium. You could freeze some as well, and sell it in stores.
- Instead of raising edible fresh water fish, you could raise koi fish, some of which can be worth hundreds and even thousands of dollars. You could raise other tropical fish as well.
There are so many ways to use aquaponics in a commercial setting. I’d prefer to use the technology for edible foods, but decorative flowers and fish can also be grown. Either way, I think aquaponics has serious commercial potential and is a great business idea.

