How to Raise Fish in a Greenhouse with Plants

Aquaponics, the practice of raising fish and plants together, creates a system that benefits both the fish and the plants. It is common to create an aquaponic system in a greenhouse, since it is easier to control the temperature, humidity and overall atmosphere in which the plants and fish are housed; it also makes it possible to raise more tropical plants and fish. There are several important things you will need to do in order to successfully create an aquaponic system.

Things You'll Need

  • Aquaponic system
  • Fish
  • Plants
  • Water
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Instructions

    • 1

      Choose the best aquaponic system and size for your greenhouse. Ebb and flow systems provide oxygenation for the plants, whereas constant flow systems filter the water more efficiently. Use an ebb and flow system if you want to raise a large number of plants, and a constant flow system if you intend to have a large number of fish.

    • 2

      Choose plants that grow in water. Any hydroponic plant, from lettuce to tomatoes to some decorative garden plants, can be grown in an aquaponic system. Consult a garden specialist about the best types of plants for your needs.

    • 3

      Place fish that are suitable for an aquaponic environment into your system. Catfish, tilapia and koi can all be raised successfully in an aquaponic environment. Choose fish that are best suited to your environment, or be prepared to heat your system during the winter.

    • 4

      Monitor the pH of your aquaponic system carefully by testing the water with pH strips and keeping the tanks free of excess algae and pollutants. The best pH for a successful aquaponic system is between 6.5 and 7.

    • 5

      Feed your fish regularly. Although fish will eat algae, a regular healthy food source is important for raising fish successfully.

    • 6

      Add a water filter to your tank. Plants help to filter the water and keep it clean for the fish, but a small water filter will help manage the excess waste produced by fish.