Aquaponics is So EASY: Plant, Harvest and Feed the Fish

Aquaponics is So EASY: Plant, Harvest and Feed the Fish
– by Colle and Phyllis Davis

Aquaponics is a balance of water, fish, plants and bacteria.

A balance of these four components is what makes a successful aquaponics system.

Mozambique tilapia


The tilapia fish in Portable Farms® Aquaponics Systems are healthy. Our plants grow to maturation and ripeness because our systems work and we know how to operate them because, over time, we’ve learned our lessons from trial-and-error mistakes and we’ve learned our wisdom through experimentation, guidance from botanists, chemists, other aquaponists around the world (there are far fewer than you might imagine), and our customers.

We seldom, if ever, lose fish. We have lost a few, but very few over the years and it was due to unique reasons and not disease. Because of our technology and the ‘human factor,’ which we teach our customers, we are happy to report our fish are extremely healthy and here are some tips you can use in your own aquaponics systems to create a productive system:

  • Always provide your fish with proper aeration, good food, insulation from cold or excessive heat
  • Keep your fish from being stressed. When fish become stressed, it lowers their immune system and they can become susceptible to disease.
    • Experiment with plants and seed selections and determine what works best in your aquaponics system in your climate.
    • Since space is at a premium in any aquaponics Grow Tray, maximum production is achieved by careful attention to size, quality and grow time for seeds.
    • Implement stalking and support systems to encourage vertical growth of plants that bear heavy fruits and vegetables (tomatoes, zucchini, etc.)
    • Protect plants at all times of their growth and maturation. Protection from wind, humidity, extreme temperatures (hot or cold), insects, disease or predators.
    • Pay close attention to water flow with appropriate levels of nutrient from fish waste.
    • Take care of plants that require pruning unneeded branches.
    • Don’t allow plants with large root systems to remain in grow trays too long. For example, the root system on a tomato plants grows very wide and very deep like a 4 inch thick carpet under the gravel and will alter water flow for the rest of the Grow Tray.
    • Study indoor pollinating techniques designed for non-pollinating and self-pollinating plants.
    • Apply effective and safe oportable-farms-greens-swiss-chard-kalerganic methods for treating plants IF they need support (seldom needed, but occasionally, you might have a problem) for any type of bugs including ants, aphids, red spiders, etc.
    • Learn effective harvest and planting cycles that are crucial to maximize yield in all aquaponics systems.
    • Use grow lights from 4:00PM to 8:00PM from Mid-November to March 1 if living in the Northern Hemisphere so you can grow various crops year round that require a longer grow day.
    • Tilapia are friendly (even clown like) and they enjoy human interaction. Talk to your fish when you feed them and treat them with respect and they will respond by being healthy and growing to maturation.
    • Never overfeed your fish. It’s tempting to overfeed them because they ‘frenzy’ when you feed them and it’s entertaining to watch them jumping around, but the fish are healthier if you’ll feed them only what they can eat in 15 seconds.
    • Don’t overcrowd the fish tanks and make sure the tanks are always clear and clean.
    • Empty the Clarifier/Settling tank regularly so their water does not foul with ammonia buildups.
    • Never, ever, use chemicals that could harm the fish, plants or the system.
    • Add make-up water during times of hot weather by placing the hose in the grow trays before it circulates back into their fish tank.
    • Feed your fish nutritious a high-protein fish food and even duckweed if you have it available.
    • Give your fish occasional treats of organic chopped greens grown in the farm.


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    • Douglas on 2013-05-31 at 9:30 pm
    • Reply

    Do you have a separate fish tank for breeding purposes &yet another tank to raise your hatchlings into fingerlings? Will this be covered in your university?

    1. Douglas,

      The breeding and rearing of fry and fingerlings is a separate issue that is lightly covered in the AU Course. Most people buy fingerlings from local breeders. If you have the need for several hundred fingerlings it is MUCH cheaper to raise your own. The breeding is a completely separate process from the PFAS.

      Colle Davis – Inventor

    • Tony on 2013-04-07 at 3:40 pm
    • Reply

    Can such a system be installed in a hot tropical environment like Nicaragua? We have a farm and grow from soil, but this seems like a better way and I am interested in having this over there.

    Thank you!

    1. Tony,

      Yes. We spent two years is the tropics, Puerto Vallarta to be exact, and the systems work fantastically well. You do have to keep the rain off the plants, but everything grows extremely well. Take the Aquaponics University Course to learn how to achieve the best results in any climate.

      Colle Davis – Inventor

    • Craig on 2013-04-04 at 10:24 am
    • Reply

    Do the fish breed?
    Do you farm your own seeds?
    If fish food is not available will the system provide for the fish?
    How much power is needed to run the system?
    What is the projected annual cost of operation? Indoors and/or outdoors?
    What about cold climates?

    1. Craig,

      Every one of your questions is answered on this website. There is a SEARCH box in the upper right on every page, use it. There are over three hundred pages on this site.

      After you finish your research then take the Aquaponics University Portable Farms to get started.

      Colle Davis – Inventor

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