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Writer's pictureKaren Østgaard

Growing Greens, Saving Blue: Aquaponics Iberia’s Solution for Water-Smart Farming


The challenges of overfishing, depleted natural resources, and climate change demand bold, innovative solutions. Enter aquaponics, a farming method that pairs aquaculture (fish farming) with hydroponics (soilless plant cultivation) into a single, sustainable system. The result? A method of food production that minimizes waste, saves water, and promotes local food security.

But as promising as it sounds, traditional aquaponics systems face significant challenges when scaled for commercial use. That’s where Aquaponics Iberia, a Portuguese startup and part of the 2024 Ocean Community Award Accelerator cohort, stands out. With their cutting-edge project Fish n’ Greens and proprietary SWIMS™ technology, they’re rethinking aquaponics to make it more efficient, scalable, and sustainable.


What is Aquaponics?

To understand Aquaponics Iberia’s impact, let’s first explore how aquaponics works. At its core, aquaponics integrates fish and plants into a self-sustaining ecosystem. Fish waste is converted by bacteria into nutrients for plants, and in turn, the plants purify the water for the fish. This natural cycle drastically reduces the need for water, synthetic fertilizers, or pesticides—making aquaponics a shining example of circular agriculture.


Yet, even this efficient system isn’t without its challenges. In traditional (or “coupled”) setups, waste accumulation, nutrient imbalances, and conflicting needs between fish and plants can hinder productivity. These limitations are particularly problematic when scaling up for commercial operations. This is where Aquaponics Iberia’s SWIMS™ (Solid Waste Integrated Management System) comes in. Their innovative approach overcomes the key hurdles of traditional aquaponics while maintaining its environmental benefits.


Fish n’ Greens and the SWIMS™ Technology

Aquaponics Iberia’s Fish n’ Greens project is a showcase for sustainable urban farming. It cultivates jade perch, an omega-3-rich “vegetarian” fish, alongside a variety of leafy greens in a system designed for efficiency and environmental impact.


SWIMS™, the technology behind the magic, introduces a third processing loop to traditional coupled aquaponics systems. Here’s what it does:


  • Captures Solid Waste: Waste from fish tanks is filtered and processed through an aerobic biodigester, creating a nutrient-rich fertilizer for the plants.

  • Improves Water Efficiency: The system reduces water loss by 30% compared to traditional coupled systems.

  • Reduces Maintenance: By preventing waste buildup in hydroponic beds, SWIMS™ cuts maintenance time and effort by 50%.

  • Enhances Scalability: With better nutrient management and automated monitoring, the system is scalable for larger operations while maintaining balance.


The result? A system that retains the benefits of coupled aquaponics—like high water efficiency—while addressing its limitations, making sustainable aquaponics more practical for commercial applications.

Why It Matters

With global food systems under pressure, solutions like aquaponics are more vital than ever. Fish n’ Greens demonstrates how local, sustainable food production can combat overfishing, reduce water use, and provide healthy alternatives to traditional farming. Their work aligns perfectly with the Ocean Community’s mission to support innovators tackling the planet’s most pressing environmental challenges.


Being part of the Ocean Community Award Accelerator 2024 gives Aquaponics Iberia the platform to scale their solution and inspire others in the industry. Technologies like SWIMS™ show how innovation can transform sustainability challenges into practical and impactful solutions.




Looking Ahead: The Future of Aquaponics

Aquaponics represents a transformative approach to global food production, addressing pressing challenges like resource scarcity, climate change, and food security. By integrating aquaculture and hydroponics, it offers a sustainable solution that reduces waste, conserves water, and promotes local farming. However, for aquaponics to reach its full potential, it requires greater investment in research, technology development, and public awareness.


Innovations like Aquaponics Iberia’s SWIMS™ system demonstrate what’s possible when creativity and science come together. With continued support and funding, aquaponics could scale to meet the demands of diverse environments and larger populations, becoming a cornerstone of sustainable agriculture worldwide.


The future of farming can be more efficient, resilient, and eco-friendly—and aquaponics is ready to lead the way.


Read more about and reach out to Aquaponics Iberia here.

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