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    You are at:Home»EDUCATION»National Science Week: Aquaponics a big hit
    EDUCATION

    National Science Week: Aquaponics a big hit

    Local science institute displays creativity and innovation at an open community exhibition
    Grocott's MailBy Grocott's MailAugust 8, 2023Updated:August 8, 2023No Comments3 Mins Read
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    From left: The exhibitors, Dr Nyiko-Mabaso, Zinzi Somana, Siphamandla Mceleli, Andisile Klaas, and Danielle Julius. Photo: SAIAB.

    By Andisile Klaas, SAIAB Science Communicator

    The NRF-SAIAB (South African Institute for Aquatic Biodiversity), in collaboration with Rhodes University’s Department of Ichthyology and Fisheries Science (DIFS), hosted a pop-up science exhibition for Makhanda residents outside the institution in Somerset Street on 4 August 2023. The exhibition was part of the institute’s initiative for National Science Week.

    Collections Technician, Zinzi Somana displaying some of the specimen from SAIAB’s fish collection. Photo: Andisile Klaas

    National Science Week is an annual initiative to exhibit and communicate awareness of science through communicating science to people outside the profession, this year’s science week took place from 31 July to 05 July 2023 under the theme, “Transforming lives through evidence-based science”. The two branches of science that are observed or emphasized under this theme are energy (building sustainable electricity) and agriculture. To stick with the agriculture component, NRF-SAIAB decided to explore and create awareness of Aquaponics.

    Curious minds watching the fish in the aquaponics system. Photo: Andisile Klaas
    The aquaponics system. Photo: Andisile Klaas
    The exhibition setup with some visitors from Rhodes University. Photo: Andisile Klaas.

    Aquaponics is an innovative and sustainable farming method that combines aquaculture (fish farming) with hydroponics (soilless plant cultivation). In this system, fish and plants work together in a mutually beneficial manner. The process begins with fish being raised in a tank or pond, where they produce waste in the form of ammonia-rich water through their “poop”. The waste becomes a valuable resource for the plants as it is absorbed as nutrients for growth. As the plants absorb these nutrients, they purify the water, removing harmful substances for the fish. To complete the loop, clean and oxygen-rich water is cycled back to the fish tank.

    Dr Nyiko Mabaso explaining the aquaponics system to our live audience. Photo: Andisile Klaas

    Some of the benefits of this system include using 90% less water than traditional soil-based farming methods, no need for unnatural fertilizers or pesticides and this reduces the risk of water and soil contamination and scalability, aquaponics can be done from small home setups to large operations. Leafy greens and herbs like mint, parsley, thyme, and sage are some of the nutrient-dense foods that can grow through this system. 

    The pop-up science exhibition was the perfect opportunity to introduce this innovative and sustainable method of farming while showcasing the work that is done by SAIAB scientists to the Makhanda public. The exhibition also attracted a diverse audience from pre-schoolers, young adults, and parents to senior citizens.

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