This week I built a micro aquaponics system to be used as a demonstration of aquaponics to show in schools and to other interested individuals. The neighbours and passers-by (I had to build it next to the small road by my house) all were intrigued!
It is all hand-built and I am using two store bought reinforced plastic tanks - about 50 litres for the fish tank and about 30 litres for the grow bed. It is a simple loop siphon system and so far it is working nicely, but I have added a timer because it has such a quick flood and drain cycle.
Growing medium is half pumice stone and half hydroton. Hydroton is 7,000 yen for 50 litres (about $90 in the US! whereas the pumice stone looks to be equally as effective and is only 500 yen for a 42 litre bag. I suspect that we will be seeing the pumice stone more and more!)
The frame is all made from weathered 2x2, 1x2 and 1x4 boards. It is built like a tank and can withstand a typhoon without batting a screw! The wheels added on at a whim halfway through have proven to be an absolute necessity.
So there we have it. A working demonstration model to use in Japan - there is almost no aquaponics here (yet) but we are working hard to change that!
Any comments or suggestions would be happily received.
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