Aquaponics and Aquaculture
Both Aquaculture and Hydroponics are becoming the latest
means to produce food in response to an increasing population and dwindling
natural resources.
Aquaculture:
Recirculating Aquaculture Systems, (RAS) aquaculture is that fish
produce waste that has a negative impact when disposed directly into the
environment. Hydroponics also disposes salt-laden wastewater into the
environment. Hydroponics also depends on fossil fuels to generate nitrogen and
requires limited resources like phosphate so it is NOT as sustainable of a
technology.
In Aquaponics, fish waste is constantly removed from the
system, and if we balanced the nutrient output of the fish with the nutrient
uptake of the plants, no water exchange is needed and only supplemental Calcium
and Potassium buffers and iron are required.
This equates to the use of 90% less water than normal
RAS-based fish farm systems
This equates to the use of 90% less water than normal
RAS-based fish farm systems so it is more water and eco-friendly. It has been
clearly demonstrated by Lennard and Savidov that fish grow just as well as any other
fish system and plants grow at the same yield and at the same rate as they do
in standard hydroponics. In fact, plants encounter less disease than in a
sterile hydroponic environments because the 100s of beneficial microbes in
Aqiaponics that are present act more or less like a probiotic for plant health.
If one uses science to analyze the water chemistry it can be
precisely controlled and optimized. Unlike hydroponics, conductivity build-up
or drop-off doesn’t occur and instead it stays constant since the nutrients get
renewed every time the fish get fed and the plants constantly use those
nutrients and grow. Therefore since Aquaponics can yield fish and plants with
zero environmental impact (AND) with more efficient water use, it wins
hands-down.