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The term aquaphonics is a combination of the names of the different processes it involves.Aquaculture,the farming of fish and then hydrophonics, which is growing of plants in fertilized water.Let us look at this process step by step.

Fish living in tanks/dams excrete waste  and respirate ammonia concentrations that needs to be removed from the tanks/dams,as it is harmfull to the fish if a built-up of it is allowed.

Ammonia rich water is processed to harvest helpful bacteria and that in turn is changed from ammonia to nitrites which in turn is fertilizer.

Nitrate rich water is then fed to the hydrophonically grown plants. The plant roots absorb the nitrates and the water is filtered from it. The roots act as a biofilter . The clean water is cycled back into the fish tanks. Thus forming a close loop system.

There is no need to add any other fertilizer.

Biogas is mostly methane ,mixed with a little bit of carbon dioxide and a small amount of sulfur dioxide.The part we interested in, is methane. Because it burns just like any other gas like propane or LPG. Some filter(we call it scrubbing) is needed to remove the other harmful components before it enters the stove/geyser or is used for gas lights.

Where do we get biogas.

It can be produced by using any organic waste and put it in a special construction that is called a biogas digester.There is many different designs and one is not really more effective as the other. The only direct influence in gas production is temperature and in turn will calls for either a specific design or between one that is standing outside or is buried below ground..

For Namibia we mainly concentrate on disgesters that is subsoil design(buried).

From the digester there is two outputs, one in gas form(methane) and effluent (liquid concentrate). The latter is ultra rich fertilizer.

We have been involved in research on biogas for a couple of years now. Its ideal for NAMIBIA as most farmers farm with livestock, and thus a lot of  manure “FOOD” is readily available for the disgester.

In our mind, there is no reason at all, why each and every farm in NAMIBIA, should not have a biogas disgester.