by Sylvia Bernstein
What if I told you that you could catch fish for dinner right in your own backyard? And what
if before you catch those fish they were growing the veggies for the rest of your dinner plate?
Would you believe me? You should! This is all within reach using a new style of gardening called
Aquaponics is, at its most basic level, the marriage of aquaculture (raising fish) and hydroponics (growing plants in water and without soil) together in one integrated system. The fish waste provides organic food for the growing plants and the plants naturally filter the water in which the fish live. The third and fourth critical, yet invisible actors in the play are the beneficial bacteria and composting red worms. Think of them as the Conversion Team. The beneficial bacteria exist on every moist surface of an aquaponic system. They convert the ammonia from the fish waste that is toxic to the fish and useless to the plants, first into nitrites and then into nitrates. The nitrates are relatively harmless to the fish and most importantly, they make terrific plant food. At the same time, the worms convert the solid waste and decaying plant matter in your aquaponic system into vermicompost.
Here is the rest of the story.
• Aquaponic Gardening enables home fish farming. You can now feel good about eating
• Aquaponic Gardening uses 90% less water than soil-based gardening because the water
is recirculated and only that which the plants take up or evaporates is ever replaced.
• Aquaponic Gardening results in two crops
for one input (fish feed).
• Aquaponic Gardening is four to six times as
productive on a square foot basis as soil-
based gardening. This is because with
aquaponic gardening, you can pack plants
about twice as densely as you can in soil and
the plants grow two to three times as fast as
they do in soil.
• Aquaponic systems only require a small
amount of energy to run a pump and
aeration for the fish. This energy can be
provided through renewable methods.
• Aquaponics does not rely on the availability
of good soil, so it can be set-up anywhere, including inner city parking lots, abandoned
warehouses, schools, restaurants, home basements and garages.
• Aquaponic Gardening is free from weeds, watering and fertilizing concerns, and because
it is done at a waist high level there is no back strain.
•Aquaponic Gardening is necessarily organic. Natural fish waste provides all the food the plants need. Pesticides would be harmful to the fish so they are never used. Hormones, antibiotics, and other fish additives would be harmful to the plants so they are never used.
•And the result is every bit as flavorful as soil-based organic produce, with the added benefit of fresh fish for a safe, healthy source of protein.
•Aquaponics is completely scalable. The same basic principles apply to a system based on a 10-gallon aquarium as to a commercial operation.
•Aquaponic gardens are straight forward to set up and operate in your own backyard or home as long as you follow some basic guidelines. They can even be constructed using recycled materials, including liquid shipping containers and old bathtubs. Or purchase a system kit if you are not very DIY-inclined. The main point is to set a system soon and become fish independent! There is simply no reason to rely on the fish counter anymore.
Sylvia Bernstein is president of The Aquaponic Source and the author of Aquaponic Gardening: A Step by Step Guide to Growing Fish and Vegetables Together. You can email sylvia (at) theaquaponicsource (dot) com or find her on Facebook – Aquaponic Gardening – or Twitter – @aquapon.