Sandponics (iAVs)

Integrated Aqua-Vegeculture Systems (iAVS) are a sustainable and efficient way to grow fish and vegetables in a closed-loop system. Building an iAVS system requires careful planning and attention to detail. Here are some steps to follow when building an iAVS system:

1. Site Selection: When building an iAVS system, the first step is to select a suitable site.

While the ideal conditions include access to a reliable source of water, level ground, and good drainage, iAVS systems are adaptable to different environments and can be built in a variety of settings. For example, if you do not have access to a large plot of land, you can still build an iAVS system using buckets or other containers.

These smaller systems can be placed on balconies or other small spaces and still provide a productive growing environment. In addition, if you do not have access to a reliable source of water, you can still build an iAVS system using manual methods such as bailing with a bucket or calabash.

Alternatively, electric pumps operated by automated timers can be used for larger systems.

When selecting a site for your iAVS system, it is important to consider factors such as sunlight exposure and wind protection. Plants require adequate sunlight for photosynthesis and growth, so it is important to choose a site that receives at least 6 hours of direct sunlight per day.

Wind protection is also important as strong winds can damage plants and disrupt water flow in the system.

2. Design: Once the site has been selected, the next step is to design the iAVS system. The design should take into account factors such as climate, water source, species selection, system size, energy source, maintenance requirements, and cost.

3. Construction: After the design has been finalized, construction can begin. The first step is to excavate the site and create the fish tank and grow bed areas. The tank should be lined with a waterproof material such as EPDM rubber or PVC liner.

4. Plumbing: Once the tank and grow bed areas have been constructed, plumbing can be installed to circulate water between the two areas. A pump is used to move water from the fish tank to the grow beds where it is filtered by plants before returning to the fish tank.

5. Planting: After plumbing has been installed, plants can be added to the grow beds. Plants such as lettuce, herbs, and tomatoes are commonly grown in iAVS systems.

6. Fish Stocking: Once plants have been added to the grow beds, fish can be stocked in the tank area of the system. Fish such as tilapia or catfish are commonly raised in iAVS systems.

7. Monitoring: After construction is complete and plants and fish have been added to the system, it is important to monitor water quality parameters such as pH levels and ammonia levels on a regular basis. This will help ensure the health of both the fish and plants.

Building an iAVS system requires careful planning and attention to detail, but can be a rewarding way to grow fish and vegetables in a sustainable and efficient manner. By following these steps, growers can create a productive and sustainable iAVS system.

Integrated Aqua-Vegeculture Systems (iAVS) are a sustainable and efficient way to grow fish and vegetables in a closed-loop system. When designing an iAVS system, there are several key considerations that should be taken into account to ensure the system is productive, efficient, and sustainable. Here are some important design considerations for an iAVS system:

1. Climate: The climate of the region where the iAVS system will be located is an important consideration. Temperature, humidity, and sunlight levels can all affect the productivity of the system. For example, in colder climates, additional heating may be required to maintain water temperatures suitable for fish growth.

2. Water Source: The source of water for the iAVS system is another important consideration. The quality of the water can affect fish health and plant growth. If using municipal water, it may need to be treated to remove chlorine or other chemicals that could harm fish or plants.

3. Species Selection: The species of fish and plants selected for the iAVS system should be appropriate for the local climate and available resources. Some species may require more specialized care or equipment than others.

4. System Size: The size of the iAVS system will depend on several factors, including available space, desired production levels, and available resources such as water and energy.

5. Energy Source: An energy source is required to power pumps, aerators, and other equipment in an iAVS system. Renewable energy sources such as solar panels or wind turbines can be used to reduce reliance on fossil fuels.

6. Maintenance Requirements: An iAVS system requires regular maintenance to ensure it remains productive and efficient over time. Consideration should be given to maintenance requirements when designing the system.

7. Cost: The cost of building and operating an iAVS system is an important consideration for many growers. While iAVS systems can be relatively inexpensive to build and operate, costs can vary depending on the size of the system and available resources.

Overall, designing an iAVS system requires careful consideration of several factors. By taking into account climate, water source, species selection, system size, energy source, maintenance requirements, and cost, growers can create a productive and sustainable system for raising fish and vegetables.