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Aquaponics Questions – Answers for Garden, Quiz, Exam

Introduction to Aquaponics Questions and Answers

Aquaponics means raising fish and growing plants by using fish waste as fertilizer for the plants. Aquaponics is a fun and cost-efficient way of raising fish and growing organic plants together.

A Step by Step Guide to Aquaponics Questions and Answers for Dummies

The advantages of Aquaponics are given below;

  • Aquaponics gardening uses 90% less water for growing plants than soil-based gardening.
  • Aquaponics gardening requires less time than other garden techniques because plants do some of the cleaning work for you.
  • Growing with the Aquaponics system is completely organic. You can’t use any harsh chemicals, because they will be fatal for the Aquaponics fish.
  • The amount of time required to grow with Aquaponics versus other forms of food gardening is much less.

Main Components of the Aquaponics System

The main components of an Aquaponics system are;

1. Plants – Growing plants organically is one reason many growers want to set up an Aquaponics system. In Aquaponics, plants play an essential role in maintaining the overall cycle of the system.

2. Fish – Fish play an important role in Aquaponics because their waste acts as a natural fertilizer for the plants. To achieve a maximum growth output from your fish, you must know the best fish to raise in Aquaponics.

3. Bacteria – Bacteria plays the main role in an Aquaponics system because they convert fish wastes into nutrients that are absorbed by the plants. The water from the fish tank that is fed to the plants has a lot of ammonia from fish wastes that are converted by the bacteria (nitrifying bacteria) into nitrites and nitrates. These nitrates are used by the plants to grow quickly.

Below are the Frequently Asked Questions about Aquaponics

What is Aquaponics and how does it work?

Aquaponics is a combination of both aquaculture and hydroponics systems. In these, aquaculture means growing fish and other aquatic animals, and hydroponics is growing plants without soil. It is a raising of fish and plants together, recirculating the ecosystem utilizing natural bacterial cycles to convert fish waste to plant nutrients.

Aquaponics is a way to grow your fish and plants at the same time. You feed the fish in Aquaponics and the fish will feed your plants through their waste output. There is no need to use extra fertilizers because the fish provide rich nutrients for the plants. In Aquaponics, less water is used for the plants.

Do plants grow faster in Aquaponics?

Aquaponics plants have access to nutrients 24 hours a day, they grow faster. For example, the Aquaponics system speeds up the growth of lettuce from 2 months to 1 month.

Does Aquaponics need sunlight?

Sunlight is the best source of light for the Aquaponics plants. Although plants need light, fish prefer some shade. Fish do not require sunlight to grow and survive, but most fish require both light and dark periods.

How long do you need to wait before planting in Aquaponics?

The ideal pH level is 5.8–6.2. Seedlings can be transplanted in Aquaponics units at 3 weeks when plants have at least 2–3 true leaves.

What’s the best fish for Aquaponics?

The best fish for Aquaponics is Tilapia, Trout, Carp, Mosquito Fish, Guppies, Catfish, Cichlids, Crappie, Bluegill, Sunfish, Perch, Koi, and Goldfish. Various ornamental fishes for Aquaponics are Angelfish, Guppies, Tetras, Swordfish, and Mollies.

Is Aquaponics self-sustaining?

Aquaponics is an innovative combination of aquaculture and hydroponics. It involves creating a simple, self-sustaining ecosystem of plants and fish that yields an indefinite source of both fresh, healthy plants and protein for you and your family.

Which is better hydroponics or Aquaponics?

Both hydroponics and Aquaponics system has several benefits over soil-based gardening. The benefits of hydroponics and Aquaponics are reduced consumption of resources, faster plant growth, and higher yields. Many believe that Aquaponics is a better option over the hydroponics system when choosing a soilless growing system.

What plants are suitable for Aquaponics?

This is one of my favorite Aquaponics questions. You can grow almost any plant in Aquaponics, from leafy greens such as lettuce and spinach, to root crops like carrots and fruiting plants such as tomatoes and strawberries. Also, you can grow flowers and herbs, or ornamentals such as ferns and palms. Plants can be grown in Aquaponics from seeds or seedlings.

Vegetables you can grow in Aquaponics are;

In a small Aquaponics garden, you can grow vegetable plants that don’t need heavy nutrient input. The vegetables growing in Aquaponics are Lettuce, Kale, Spinach, Watercress, Chives, Swiss chard, Arugula, Decorative Flowers, Mint, Okras, Spring Onions, and Leek, Radishes, Spinach, and other small vegetables. Cabbage, Tomatoes, Cucumbers, Broccoli, and Cauliflower can require a more advanced Aquaponics system. Avoid growing plants that need acidic or alkaline water, because those pH levels can harm the fish.

What source of water used in an Aquaponics system?

As with all water used in Aquaponics, it has to be free of toxic chemicals, and if possible, have little or no suspended solids. Water that is clear and clean will make it easier to observe the fish, giving you a clear view of what is happening in the fish tank. If using chlorinated water, chlorine should be removed before the water can be added to the system. Chlorine can be removed from water by using a filtration unit, exposing the water to air and sunlight for several days, or using water additives that neutralize the water.

What is cheaper Aquaponics or hydroponics?

This is one of the frequently asked questions of the Aquaponics system. Normally, Aquaponics is a cheaper system to operate than hydroponics. Fish food used in Aquaponics is cheaper than nutrient solutions used in hydroponics.

What media should use in an Aquaponics system?

The best medium used in an Aquaponics system is expanded clay. Expanded clay is porous, lightweight, earthy clay aggregate. It’s durable and has exceptional capillary properties. The internal arrangement absorbs the nutrient solution, releasing it to the plant on demand. Also, it holds the plant in place but is light enough to allow air penetration to the plant roots, which prevents excessive acidity. Expanded clay is pH neutral and is reusable for several years.

Can potatoes grow in Aquaponics?

Potatoes can be grown using several methods, including Aquaponics. Aquaponics is a practice that combines growing plants in water with the aid of fish and other living aquatic animals. Aquaponics vary in size and can be used indoors or out.

Is Aquaponics food healthy?

This is one of my favorite Aquaponics questions. Aquaponics has consistently proven to be a safe method to grow fresh, healthy fish, fruits, herbs, and vegetables in any environment.

Are Aquaponics vegetables safe to eat?

The truth is your Aquaponics growing food is safe. If you take certain steps, food grown with an Aquaponics system is much healthier than a lot of the things you buy at a major grocery store. Aquaponics creates a thriving ecosystem full of wonder.

How does control the temperature in my home Aquaponics system?

Temperature control is important for the health of fish and the health of the entire Aquaponics system, so choose your heater with care. Tank heaters must be used in colder climates to keep the water at the proper temperature, and a good thermometer is a must.

Depending on where you live and the ambient temperature outside, it could take 2 or 3 tank heaters to keep the water sufficiently warm. You should monitor the temperature in the Aquaponics system daily and make any adjustments required to keep your fish, and your plants, happy and healthy.

How long does it take for an Aquaponics system to cycle?

Cycling starts when first setting up or restarting an Aquaponics system. The cycling process generally takes from 4 to 6 weeks. The time frame is dependent on the water temperature level of 24 to 26° C.

Importance of pH control in Aquaponics?

The pH is an important part of the Aquaponics system. A neutral pH level from 6.8 to 7.2 is good for the Aquaponics plants. It’s important to monitor the pH level each day and to keep it within the neutral range.

Can you grow root vegetables with Aquaponics?

Aquaponics gardening is an organic system in which fish and plants are grown together. In Aquaponics, you can grow leafy vegetable plants, herbs, and ornamental plants that grow above the soil, gardeners can also grow Aquaponics carrots and other root vegetables.

What are the different types of Aquaponics designs?

This is one of the Aquaponics questions being asked everywhere.

Primarily, there are three different types of Aquaponics systems;

Nutrient Film Technique (NFT) – Most popular with hydroponic production, this process is best suited for leafy greens. NFT system is not suited for large fruiting plants as their root masses may clog the channel and their weight may not be supported. The water-rich nutrients flow through a PVC pipe and plants are kept in holes created in the pipe. Strawberries and herbs that need little support can be grown by this method.

Media Bed – The media bed form of the Aquaponics system uses containers filled with rock media such as gravel or expanded clay (hydroton) to support the roots of plants. The media used to support the plants acts as a mechanical and biofilter to capture and breakdown wastes. The plants are grown in an inert medium such as shale or clay pellets. Then, this media offers biological filtration where ammonia is converted into nitrates. It also helps in mechanical filtration where solid wastes are removed and it is used in homes.

Deep Water Culture (DWC) – Deep Water Culture is also called float systems. Deepwater culture uses floating rafts to suspend plant roots into nutrient-rich and aerated water. The roots float directly into a pool of water about 1 foot in depth. Then, there are no media to capture and process the solid wastes, filtration techniques must be built into the design. This necessitates more advanced aquaculture methods and system requirements, leading to higher upfront costs. DWC uses a raft with foam, which floats on a fish effluent water channel, which is filled. The plants filter this water and plants are put in the raft holes. This method is used to grow salads and it is used in large commercial locations.

What equipment do I need for Aquaponics?

The main components of an Aquaponics system are;

  • Fish tank
  • Grow beds
  • Water pump
  • Aeration pump
  • Biofiltration
  • Mechanical Filtration
  • Plumbing for irrigation and drainage
  • For media-based systems, the medium is needed.
  • Fish and plants (seeds)
  • Water
  • Air pump with air stones
  • PVC piping with fittings
Do you have to feed the fish in an Aquaponics system?

In Aquaponics gardening, the fish feed is one of the most important inputs. Then, there is a direct relationship between the feed going into the system and the growth of your plants. If Aquaponics fish don’t seem to be hungry don’t feed them. Fish can survive for weeks without feeding.

What are the benefits of Aquaponics?
Benefits of Aquaponics
Benefits of Aquaponics

This is oone of the most common questions being asked in the Aquaponics gardening subject.

The benefits of Aquaponics are;

  • Aquaponics is a way to grow your fish and vegetable plants at the same time. You feed the fish in Aquaponics and the fish will feed your plants through their waste output.
  • There is no need to use fertilizers in Aquaponics because the fish provide rich nutrients for the plants.
  • In Aquaponics, less water is used for the plants.
  • You won’t experience any soil-borne diseases in an Aquaponics system because there is no soil.
  • In Aquaponics, you can grow plants in a very small space, and have a great harvest.
  • Aquaponics plants grow fast because they get very nutritious substances from fish waste.
  • Plants and fish production in Aquaponics can be done in a controlled temperature environment.
  • Reduced water use. Only about 10% of the water required for Aquaponics.
  • Little or no pests when Aquaponics set up in a controlled environment.
  • It can produce fish and plants all year round.
What are the disadvantages of Aquaponics?

One disadvantage of using Aquaponics is that the electricity outputs are very high. Then, this is because the fish tank needs to be kept at a certain temperature 24 hours a day.

The most common algae that cause problems in an Aquaponics system are the green algae. Algae can cloud up the water in an Aquaponics system, foul pipes, and pumps and can cause oxygen depletion and pH swings.

Not Many Plants Available – A lot of plants cannot be grown through Aquaponics. For example, specific plant species like tuberous plants and root vegetables perform most of their growth within soil and Aquaponics uses water as a substitute for soil. It is hard to grow large plants as it takes a lot more water and nutrients.

High Consumption of Electricity – Fish tanks are supposed to be kept at certain temperatures 24 hours a day. Also, water pumps run 24 hours a day and this leads to high electricity consumption. The Aquaponics system is difficult to operate in places where electricity is not available 24/7.

Unsustainable Fish Food – The food cost for the fish can make the system economically unsustainable. It is very important to ensure the supply of such food at an appropriate price. And, at a certain moment, once the system is installed. It could become the most expensive factor in the entire system and special attention has to pay.

The Initial Cost To Set Up The Aquaponics – Starting an Aquaponics system has a relatively higher initial cost than other production methods, such as home gardens. It will depend on the size of the Aquaponics system. Consider that pumps and plumbing items are required.

You should not miss this: How To Grow Plants In Water.

How do control pests and diseases in Aquaponics plants?

This is one of the wonderful Aquaponics questions that everybody should know.

The most common pests in Aquaponics are;

  • Aphids
  • Caterpillars
  • Tomato Hornworms
  • Bettles
  • Mealybugs
  • Cutworms

Then, there are different ways that you can safely eliminate pests from Aquaponics without using chemicals, and here are some of them;

1. Check your plants regularly for pests.

2. Hand removes visible pests that you find in plants and destroy the pests.

3. You can use bug netting in the system to create a physical barrier around the plants to prevent many pests.

4. You can plant pest-repelling plants in your Aquaponics system to drive away from the pests. You can plant these plants beside vegetables. The pest-repelling plants in Aquaponics system are Artemisia, catnip, dill, chives, chrysanthemums, petunias, and mint.

5. Use beneficial insects like ladybugs, lacewings, and spiders. These are beneficial insects that can help in preventing pests in your plants.

In case if you are interested in this: Green Manure In Organic Farming.


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