How to build a self-contained ecosystem in a single weekend
In short: By connecting a fish reservoir to a vertical garden, you can create a recirculating system where nutrient-rich fish waste naturally fertilises your plants. This aquaponic green wall is a perfect weekend project for anyone looking to bridge the gap between aquatic and terrestrial environments.
At its core, an aquaponic system is a closed loop. In a setup like the one demonstrated by environmental scientist Kieran Richard or featured by Gardening Australia, a reservoir at the base holds fish. As the water recirculates, it carries waste from the fish up through a vertical wall, providing a natural liquid fertiliser for the plants. While traditional aquaponics often focuses on fish for food, you can use ornamental fish to achieve the same ecological effect. This method effectively ties together different biological realms. You can even use a wooden trough lined with pond liner as your base reservoir.
Building the wall requires a sturdy frame—such as a recycled aluminium gate or wooden door frame—and a waterproofed surface. If your wall isn't naturally waterproof, applying bitumastic cement paint can prevent leaks. The growing medium itself often involves expanded PVC foam sheets covered in a material like recycled PET felt. This felt is crucial because its high surface area supports the growth of beneficial bacteria, which are essential to the system's health. The project requires basic tools like a drill, measuring tape, and a Stanley knife. You should also budget approximately $500 for all necessary materials.
The irrigation mechanism relies on a 19mm pipe running along the top of the wall, equipped with 4mm drippers spaced roughly 20mm apart. To ensure success, you must choose plants suited to your environment, such as ferns, orchids, or pitcher plants, and ensure the water is pH balanced and at room temperature before adding fish. If you choose to run the wall without fish, you must manually supplement the plants with liquid fertiliser to maintain the cycle. When planting, use a knife to cut holes in the felt at intervals of 10 to 15cm. For indoor setups, you might even need grow lamps to provide essential UV light.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: Build your own aquaponics garden
To cite this card, link to https://intellectplus.co.uk/app/gardening-build-your-own-aquaponics-garden.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Gardening · Latest · A–Z · All topics
