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I re-assembled my NFT salad system today. We removed it from its former location over the main tank because, while the idea of stacking backyard food production systems has considerable merit, this particular arrangement was less functional than I wanted.
We moved our 800 litre system outside of the shed where it has lived up until now. It now contains 87 juvenile Jade perch. Nitrification is facilitated by the two 65 litre trickling bio-filters. These small units have operated flawlessly for the past 18 months.
We've attached a duckweed tank to soak up the nitrates on this little unit. The NFT unit will also assist in this role.
