In this system, a growing media (usually lava rocks or clay balls) is added to a grow bed to plant the crops. The grow bed is then periodically flooded with water from the fish tank to provide the plants with nutrients and filter the water. The water then drains back into the fish tank. 

Pros: 

• relatively inexpensive and straightforward

• suitable for all kinds of plants

• minimal cleaning required

Cons:

• good quality media can be expensive

• poor spaces may get clogged over time creating anaerobic conditions (cleaning required if this happens)

• not suitable for commercial use by itself 

(GoGreenAquaponics, 2022)

In this system, plants are grown on long narrow pipes that have a continuous small stream of water flowing through them. This provides the plant roots with water, nutrients, and oxygen. Because growth media is not present, there are filters for solid fish waste and to provide surface area for beneficial microbes. This system is known for commercial use.

Pros: 

• uses fewer materials and less space than other systems

• allows for continuous water purification

• large space is not required

Cons:

• water temperature is harder to control

• suitable for only small rooting plants

• susceptible to clogs due to narrow pipes

(GoGreenAquaponics, 2022)

In the raft system, the plants are grown on rafts and are supported by net pots. The nutrient-rich water circulates in deep canals (~20cm) where the rafts float on top. The plant roots are submerged entirely in the nutrient and oxygen-rich water. The water flows continuously from the fish tank to the filter, to the water beds, and back to the tank. This system is optimal for large-scale commercial use. 

Pros: 

• roots are more exposed to water nutrients

• suitable for commercial use

• high productivity 

Cons:

•  aeration is required because roots are fully submerged

• little surface area for beneficial microbes

• can be a mosquito breeding ground if not set up properly

(GoGreenAquaponics, 2022)

This component makes companies focus on the people they affect

Implementing an aquaponics system at GVSU would...

• Provide a learning tool for both adults and children

• Bridge the gap between consumers and producers

• Improve food security

This component focuses on making a positive impact on the plant. 

Implementing an aquaponics system at GVSU would...

• Reduce food miles and transport emissions

• Less water and energy consumption

• Create eco-effective architecture

Profit focuses solely on financial performance of the company. 

Implementing an aquaponics system at GVSU would...

• Yield more product at the end of the year

• Lowers unemployment rates

• Utilizes empty land