Large scale aquaponics

Aquaponics is a method of agriculture than can be adopted easily and can have a big impact on food security, especially in developing nations. See these articles

 Home aquaponics is one thing… large scale takes a lot more planning. We are starting in a modular way to control quality and sort out issues. After the roof is built and the tanks and beds are made and after the pumps and plumbing set up is complete we begin the aquaponics testing.
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Preparation for beds
Tanks need to be filled with rain water and the nitrogen cycle must be established well before any fish are added to ponds. This is done using compost. Water testing for ammonia levels, Ph, Nitrite and Nitrate begin and continue every 2 days initially. Eventually these will be taken weekly. It takes months for the system to fully settle in and become mature. In the mean time it needs close monitoring.
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Using recycled tyres to build retaining walls for sump tanks and terraces
After 1-3 of the tanks are active and the system is beginning to work we will bring the rest of the tanks online.
Fish selection is critical. They need to be hardy but also marketable.
This is a complex area and we will work with the fresh water research centre in West Java to plan our fish stock (http://nsgl.gso.uri.edu/hawau/hawauw93001/hawauw93001chap14.pdf)
Scale of the aquaponics: 15 tanks of 4500 litres each = 67,500 litres – up to 3000 fish – approximately 200 square meters of grow bed space.

We will free build the fish tanks and the grow beds will be on ground level. The sump will be a large collection pond with one high powered pump to do the distribution for the whole system via a top tank. Everything else is gravity-fed.

There will be more detail and updates on this page in coming months as we progress with the infrastructure.