How To Grow Vegetables With Aquaponics

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1. Invest in Reliable Equipment

• While the core list of equipment remains largely unchanged, the quality available within different price ranges has improved significantly.

  Aquarium or tank. A 100-gallon tank is still the recommended starting size for a serious home aquaponics setup. It offers flexibility in fish species, plant density, and system stability. Acrylic tanks are lighter and clearer, whereas glass tanks are heavier but more resistant to scratches. Expect to invest $300–$600 for a high-quality 100-gallon tank.
  Search current options on Amazon.

  For those new to aquaponics, the
  AquaSprouts Garden Kit is a well-regarded all-in-one beginner system designed to fit a standard 10-gallon aquarium. It includes a grow bed, submersible pump, mechanical timer, and light bar mounting system, all for $75–$90. The aquarium is sold separately.

  Canister filter. For a 100-gallon aquaponics tank, aim for 500–600 gallons per hour (GPH) of water turnover, which exceeds the tank volume requirements due to the high fish load demanding robust filtration. The
  Fluval FX2 (~$269 on Amazon) is consistently top-rated for tanks up to 100 gallons, with features like 4-stage filtration, Smart Pump technology for automatic flow adjustment, and a built-in water change system. A budget-friendly option is the
  Penn-Plax Cascade 1000 (~$199 on Amazon), which also handles up to 100 gallons, recirculating the water more than twice an hour.

  Air pump. Maintaining dissolved oxygen is crucial for fish health and the nitrification process driven by beneficial bacteria. A reliable air pump — or a canister filter with an integrated spray bar — ensures stable oxygen levels. A
  2025 review in
  Reviews in Aquaculture found that micro-nano bubble (MNB) aeration increased butterhead lettuce yield by 35% compared to conventional diffusers and raised nitrate concentration in the water. Though MNB systems are available commercially, they have not yet become mainstream for home setups, making conventional air pumps the practical choice for most beginners.

  Grow lights (optional, system-dependent). Indoor systems often require supplemental lighting. Full-spectrum LED grow lights have become more affordable and energy-efficient. Look for LED bars with daylight-spectrum output (5000–6500K) sized to your grow bed.
  Search LED grow lights on Amazon.

  Water heater (optional). Tilapia thrive in temperatures between 70–85°F. If your space tends to be cooler, a submersible aquarium heater is essential.
  Search aquarium heaters on Amazon.

2. Choose Your Setup

There are three types of systems that work well at home scale. The choice depends on your available space, desired crops, and tolerance for complexity.

Media bed setups are recommended for beginners. In this setup, plants grow in a bed of inert media like expanded clay pebbles, gravel, or lava rock, placed above or beside the fish tank. A pump periodically floods the bed and then drains it back. The media supports plant roots and houses beneficial bacteria.
Research from Texas A&M confirms that media beds are forgiving for beginners and support a wide range of crops, including fruiting vegetables like tomatoes and cucumbers. The
Oklahoma Cooperative Extension Service offers detailed DIY build plans.

A
2025 study found that using carbonized rice husks and cocopeat as grow media can yield five times more crops than traditional expanded clay aggregate (LECA), though they decompose over time and need more frequent replacement.

Nutrient film technique (NFT). This setup features a thin stream of water flowing continuously through PVC tubes, allowing plant roots to hang inside. It is excellent for herbs, lettuce, and small greens in tight or vertical spaces. The tubes can be wall-mounted. Research has shown that vertical aquaponics setups can boost productivity per unit area
by up to 160% compared to horizontal systems when used with strawberries and basil.
NFT kits are available on Amazon for both DIY and complete systems.

Raft (deep water culture). In this method, plants float on foam rafts with their roots submerged directly in nutrient-rich water from the fish tank. Although this setup yields higher for leafy greens than NFT, it requires more robust filtration since solids are not removed by a media bed. It is more common in semi-commercial operations than in small home setups.
Check options on Amazon.

A variety of IoT sensors are now available, enabling you to monitor pH, dissolved oxygen, ammonia, and temperature directly from your phone.
WiFi pH/EC meters designed for hydroponic and aquaponic systems are available in the $60–$120 range. For beginners, manual weekly testing suffices. For those running a system unattended or scaling up, continuous monitoring significantly reduces the risk of a water quality crash.

3. Add the Fish

An aquaponics system supports multiple fish species. Popular choices include:

• Tilapia: The most common aquaponics fish, tilapia are favored for their tolerance to temperature changes, pH fluctuations, and elevated ammonia levels. They grow quickly, typically ready for harvest in 6–8 months, are inexpensive to stock, and offer a dual harvest of vegetables and protein. Ideal for warm indoor or greenhouse systems (70–85°F).
• Koi: A popular ornamental option, koi are hardy and tolerate poor water quality. However, they are susceptible to pathogens and are not usually harvested for food. They are best suited to media bed systems where maintaining water quality is easier.
• Bluegill, perch, and catfish. These are good edible alternatives to tilapia, especially in cooler climates where maintaining warmth for tilapia is challenging. The
  Texas A&M fish species selection guide provides detailed information on temperature ranges, feed conversion ratios, and disease susceptibility for species suitable for home-scale systems.

While these options are popular, carp, perch, largemouth bass, bluegills, guppies, and more can also be considered. Purchase fish from reputable aquaculture suppliers or local fish hatcheries to avoid disease-carrying fish, which can quickly disrupt a new system. Pet store fish do not come certified as disease-free.

4. Add the Plants

The choice of vegetables to grow in your aquaponics system is vast. Popular choices include broccoli, celery, cucumbers, and basil.

However, because different plants have varying needs, it’s important to choose those that will prosper in your setup.
Go Green Aquaponics suggests considering the following:

1. System: What type of aquaponics system you will use – plants with no root structure do well in a raft setup, while root vegetables do well in a media bed.
2. The optimal temperature and pH level for your fish and your plants – the closer the match, the more successful you’ll be.
3. Environment: the amount of light, temperature, and – if you’re setting up your system outside – rain the plants will get.
4. How much space you have for plants versus how much space the plants need to grow.
5. Plant-to-fish ratio: The more fish you plan on having, the more plants you need to absorb the nutrients.

5. Maintain Your System

Keeping plants and fish healthy requires regular maintenance. Consider these tips:

• Feed your fish two to three times daily in small amounts. Overfeeding is the most common cause of ammonia spikes in home systems. Uneaten food decomposes rapidly and overwhelms the beneficial bacteria that keep the system in balance.

  Test pH weekly. Target range is 6.4–7.4, with most systems running best around 6.8–7.0. The
  API Freshwater Master Test Kit (~$35 on Amazon) tests pH, ammonia, nitrite, and nitrate in one kit — the standard recommendation for aquaponics monitoring. For more serious systems, the
  LaMotte Aquaponics Water Test Kit (~$85 on Amazon) covers nine parameters including dissolved oxygen and carbon dioxide, and comes with a rugged carrying case. To raise pH naturally, dissolve a tablespoon of food-grade potassium carbonate (potash) in a bucket of system water, add it slowly to the tank, and retest after 24 hours before adding more.

  Test ammonia and nitrate weekly or biweekly. Ammonia should be below 2 ppm; nitrates should stay under 160 ppm. Elevated ammonia: feed less, increase aeration, or reduce fish density. High nitrates: add more plants or remove some fish.

  Mind the cycling period. A new system takes 4–6 weeks to fully cycle and for the bacterial colony to establish and nitrogen conversion to stabilize. Don’t increase fish load or plant density during this period. Ammonia and nitrite readings near zero consistently is your green light.

The following video from Rob Bob’s Aquaponics provides guidance on how to check the pH, ammonia levels, and nitrate levels.

Get Some Fish In Your Garden

Aquaponics offers an efficient and eco-friendly method to cultivate produce and raise fish simultaneously. It allows for the growth of a variety of leafy greens, with many fish species adapting well to this system. With regular maintenance, aquaponics can provide a sustainable and rewarding gardening experience.

The science of aquaponics is advancing quickly. Three developments from recent peer-reviewed literature are worth knowing about, even if most aren’t yet practical for home systems:

Algae co-cultivation.

Reviews in Aquaculture reports
that introducing macroalgae such as
Spirogyra spp. can nearly double plant yields compared to traditional aquaponic systems. Co-cultivating microalgae (
Chlorella) with plants in raft systems also controls ammonia at twice the efficacy of non-algal systems. This is emerging research — not yet mainstream for home growers — but a promising direction for anyone looking to push yields further.

Decoupled system design.
Research from the
Journal of the World Aquaculture Society (2024) documents that decoupled systems, which separate the aquaculture unit from the hydroponic unit, allow optimized conditions in each component, resulting in better nutrient utilization and increased productivity compared to coupled designs. Decoupled systems allow independent pH management for fish and plants, which is otherwise a constant compromise in standard coupled setups. Commercially available decoupled systems are beginning to become available; for DIY builders, it’s a worthwhile design consideration when scaling up.

AI and IoT integration. A
2025
Sustainable Environment Research review emphasizes that monitoring strategies using artificial intelligence, the Internet of Things, and renewable energy can significantly enhance aquaponic system efficiency. For home growers, this means the WiFi monitoring systems mentioned in Step 2 are part of a broader wave of automation coming to small-scale aquaponics. The good news: prices will continue to drop.

Editor’s Note: This article was originally published on March 17, 2021, and updated in April 2026. Feature image of outdoor aquaponics system courtesy of Vasch~nlwiki,
CC BY-SA 4.0, via
Wikimedia Commons

About the Author

David Thomas is founder and editor-in-chief of
Everything Fishkeeping, a fishkeeping and aquascaping magazine. He has been keeping fish since he was a child and has kept over 12 different setups. His favorite is his freshwater tank with Tetras and Loaches.