How to Grow Microgreens in Aquaponics? Integrated System

HomeGrowingHow to Grow Microgreens in Aquaponics? Integrated System

Growing microgreens in aquaponics involves utilizing a floating raft or a growing media system. In a floating raft system, the microgreens float on a foam board that sits on the water surface. In a growing media system, the microgreens are grown in a soil substitute like expanded clay pebbles. Monitor water quality and provide nutrients to ensure the microgreens grow successfully.

Overview of Aquaponics

You may be wondering what aquaponics is – it’s a way of growing plants and fish together in an integrated system! Aquaponics is a sustainable, low-cost setup that combines aquaculture (fish farming) with hydroponics (growing plants in water).

This type of gardening requires fewer resources than traditional methods, since the same water is reused over and over again. The fish produce waste which is then broken down by bacteria into nutrients for the plants. As the plants absorb these nutrients, they help to filter out the toxins from the water, creating a clean and healthy environment for both species.

Aquaponic systems can also be used to grow microgreens – small edible greens such as basil, arugula or kale – with relative ease. Microgreens are high in vitamins and minerals making them an excellent addition to any diet!

To grow microgreens in an aquaponic system you will need either a floating raft or some kind of growing media such as clay pellets or pebbles. The raft should be placed on top of your tank so that your plants will have access to light while still being submerged underwater. You’ll also want to ensure that your tank has adequate water quality by regularly checking its temperature, pH level, oxygen content and nitrate levels.

Once everything is set up properly you can start planting your seeds directly onto the floating raft or within the media. It’s best to start with a few different varieties of microgreens so you can see how they grow differently within your aquaponic environment! You should begin harvesting once your microgreens reach maturity which typically takes around 1-3 weeks depending on which variety you’ve chosen to plant. When harvesting make sure not to take too much at once so that there will still be enough left for subsequent harvests throughout the season.

Microgreens grown in an aquaponic system are delicious additions to salads, sandwiches and other meals! They’re easy to care for and require minimal effort when compared with traditional garden methods; plus they provide two crops in one – nutritious greens plus tasty fish! With regular maintenance and proper monitoring you can enjoy fresh healthy microgreens all year round without breaking the bank or harming our planet’s precious resources.

Benefits of Growing Microgreens in Aquaponics

Harvesting microgreens in an aquaponics system offers several advantages that you won’t find with other methods. One of the biggest benefits is that it can be done entirely organically, since no chemical fertilizers are necessary. Instead, organic fertilizers are produced naturally by the fish and bacteria living in the system, providing nutrition to the microgreens without any harsh chemicals.

Even better, this method helps keep water quality at a high level so that your plants remain healthy and productive over time. The second benefit of growing microgreens in aquaponics is that you don’t need soil to do it. You can use either a floating raft or growing media instead, making it easier to get started with little effort or expense. With both options, you still reap all of the same nutritional benefits as you would from soil-grown plants since all essential nutrients for growth are provided by the fish waste and bacteria within your system.

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Aquaponic systems tend to take up less space than traditional soil-based ones since they don’t require large planting beds or containers for each crop type you want to grow. This makes them ideal for those who live in smaller spaces but still want to enjoy fresh produce year-round without having to worry about limited space and resources. Plus, because there’s no need for weeding or tilling of soil (which can be time-consuming), you’ll save even more time overall on maintenance tasks while getting healthier results faster!

Lastly, harvesting microgreens from an aquaponic system is incredibly easy – simply pick off whatever size you’re looking for and enjoy! No matter what type of greens you choose – kale, spinach, arugula – they will always taste fresh and delicious thanks to their natural environment filled with beneficial microbes and nutrients from the fish waste in your tank.

Setup Requirements

If you want to get started growing microgreens in aquaponics, there are certain setup requirements that need to be met.

Water should be clean and well-oxygenated, with a temperature range of 65-85°F.

Lighting should provide 14-16 hours of light per day.

Finally, you’ll need to provide adequate nutrients for the plants; they can either come from the fish waste or you can use a commercial fertilizer.

With these key requirements in place, you’ll have everything necessary to start your microgreen aquaponic system!

Water Requirements

Ensuring the right water requirements are met is essential for successful microgreens cultivation in aquaponics systems.

Water temperature, pH, and oxygen levels must all be monitored to ensure fish health and nutrient balance. Fish stocking should also be taken into account when determining the amount of water needed for your system.

It’s important to keep a close eye on these parameters as they can have an effect on how well your crops grow and thrive. The nutrient-rich water produced by your system will help provide an ideal environment for growing microgreens.

Additionally, you’ll need to make sure there is enough oxygen present in the water in order for the plants to photosynthesize properly. If oxygen levels become too low, it could lead to stunted growth or even death of some plant species.

Regularly testing these factors will help you achieve optimal conditions for growing microgreens in aquaponics systems.

Lighting Requirements

Proper lighting is key to cultivating healthy microgreens in aquaponics systems, so make sure your system has adequate light coverage. The amount of light needed for optimal growth depends on the type of microgreen you’re growing and the time of year. Most will need at least 8-12 hours of direct sunlight each day or supplemental heat sources like fluorescent lights.

To ensure your plants get enough light, you can use a floating raft or grow media that allows air and water to pass through but still blocks out some of the sun’s rays. Keep an eye on the light levels in your system by checking it periodically with a lux meter or light sensor. If you find that your plants aren’t getting enough indirect sunlight, adding supplemental heat sources can help boost their growth rate.

Nutrient Requirements

Nutrient availability is critical for successful microgreen production in aquaponics systems, since it directly affects their growth rate and health. By supplementing the natural nutrition available in the water, you can ensure your plants have the right balance of nutrients to thrive – without sacrificing flavor or texture.

There are two main sources of nutrients that can be used to supplement an aquaponic system: nutrient-rich fish waste and liquid fertilizer. Here are four key points to consider when selecting your nutrient source:

  1. Choose a fertilizer type that specifically targets microgreens, as they have different nutritional needs than other crops.
  2. Ensure that the fertilizer is free from harmful chemicals or pollutants.
  3. Make sure the fertilizer has a balanced ratio of macro and micronutrients for optimal plant growth.
  4. Select a brand with a good reputation for producing quality products.
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With these tips in mind, you’ll be able to select a nutrient source that will optimize your microgreen production in aquaponics systems!

Choosing the Right Growing Media

When it comes to growing microgreens in an aquaponics system, you need to choose the right growing media.

Floating raft systems are a popular choice and involve placing styrofoam on the surface of the water with small holes cut into it for planting seeds.

Alternatively, you can use one of several different types of grow media such as perlite, vermiculite, coconut coir, or peat moss.

Each type has its own advantages and disadvantages, so be sure to do your research before selecting growing media for your microgreens.

Floating Raft Systems

Floating raft systems are an easy and fun way to get started growing microgreens in aquaponics – you’ll be harvesting fresh produce in no time! This system is great for those who don’t have a lot of space or aren’t looking to invest in a larger aquaponic system.

It requires only two components, the fish tank and the floating media. When stocking your fish tank, it’s important to select fish that are compatible with each other and also suitable for your local climate. The type of plant you choose will depend on what kind of microgreens you want to grow, but make sure it is compatible with aquaponics.

Floating raft systems help provide nutrient-rich water for your plants while keeping the water clean and healthy for the fish. With this system, you can easily adjust the height of the media so that your plants get just enough light and nutrients without being over-exposed or overcrowded.

Growing Media

You won’t believe how quickly your microgreen crop can flourish when you choose the right growing media for aquaponics! Growing media is a soil-free gardening method that uses fish-based nutrients to provide essential minerals and organic matter for plants.

It provides an ideal environment for plants to thrive, while also providing a safe home for the fish in the system. The most common types of growing media used in aquaponics are expanded clay pellets and coconut coir.

Expanded clay pellets are small round pieces of clay that have been heated at very high temperatures, making them lightweight yet sturdy enough to support plant roots. Coconut coir is made from coconut husks and is an excellent choice because it has superior water retention properties and allows oxygen to flow freely around the root systems of your plants.

Both expanded clay pellets and coconut coir provide a stable base for your microgreens to grow on while also delivering vital nutrients from the fish waste.

Planting and Caring for Microgreens

Once you’ve decided to grow microgreens in aquaponics, it’s time to plant and care for them. Depending on the type of growing medium you choose, your process may vary slightly.

If you’re using a floating raft, fill the tray with an inch or two of water and then sprinkle your soil nutrients onto the surface. Next, spread your seeds over the top and press them lightly into the soil.

If you’re using a growing media such as vermiculite or perlite, moisten it before adding it to your container and then add some seed varieties of your choice. Once planted, cover your microgreens with a thin layer of moistened paper towels or plastic wrap to keep them warm until they germinate.

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Once the microgreens begin sprouting, uncover them and place in direct sunlight or under fluorescent lighting for eight hours each day if needed. Increase light exposure gradually so that they don’t become sunburnt from too much light too soon!

Watering is also important when caring for microgreens in aquaponics; make sure that whatever method you use doesn’t leave standing water at any point as this can cause root rot. A spray bottle works well if you want to mist them regularly throughout the day to keep their leaves hydrated without overwatering.

You’ll also need to fertilize occasionally since aquaponic systems typically lack certain essential minerals found in soil-based systems, which can be added through liquid fertilizer every few weeks, depending on what type of plants you’re growing.

It’s important to note that even though microgreens generally grow quickly compared with other kinds of produce, they still require consistent maintenance like weeding out any unwanted plants that may have crept up during growth, as well as harvesting once they reach maturity after about 10-15 days – always making sure not to remove more than 1/3rd of each plant at one time so there is enough left behind for regrowth!

Finally, be sure not to forget about providing adequate ventilation for all aquaponic systems – this helps keep air circulating around plants, which can really help boost growth rates while simultaneously preventing disease caused by stagnant air conditions inside containers or tanks.

Harvesting and Enjoying the Results

Harvesting the flavorful bounty of microgreens from an aquaponic system can be a rewarding experience, providing you with fresh ingredients to enjoy in your recipes. The best time to harvest microgreens is when they’ve grown their first true leaves; this typically takes about two weeks. Knowing the proper harvesting techniques will help ensure that you get maximum flavor profiles and yield from each crop.

For most microgreens, you’ll want to use scissors or garden shears to cut right at the soil line. When harvesting, make sure not to pull up any roots as that could damage other plants in the system.

Once harvested, rinse your microgreens well before consuming them. Gently dry them in a salad spinner or paper towel and store them in an airtight container for up to five days in the refrigerator.

Microgreens are incredibly versatile and can be enjoyed as a snack or used as a garnish on salads, sandwiches, soups, tacos and more! Just remember to add them near the end of cooking so you don’t lose out on all those delicious flavors.

Aquaponic systems have many advantages when it comes to growing microgreens – no need for additional fertilizers or pesticides since nutrients come from fish waste; less water consumption compared with traditional farming methods; and faster growth times due to ideal temperatures and constant water supply. With these benefits in mind, there’s never been a better time to start growing your own microgreens!

Harvesting your own aquaponically-grown microgreens is simple yet rewarding – just remember not to pull up any roots while cutting them off at soil level and rinse thoroughly before consuming. Enjoy their unique flavor profiles as snacks or add them near the end of cooking for an extra punch of color and flavor in every dish!

Kathy Turner
Kathy Turner
Kathy Turner is the founder of, a popular blog dedicated to helping people become master microgreen growers. Kathy is passionate about helping others learn how to grow the healthiest, most nutrient-rich microgreens. She believes that with the right knowledge and resources, anyone can become a successful microgreen grower. Learn more about Kathy by viewing her full Author Profile.

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