Description
Combining plants and fish in a RAS is referred to as aquaponics. In this type of system ammonia produced by the fish is not only converted to nitrate but is also removed by the plants from the water. In an aquaponics system fish effectively fertilize the plants, this creates a closed looped system where very little waste is generated and inputs are minimized. Aquaponics provides the advantage of being able to harvest and sell multiple crops. Contradictory views exist on the suitability and safety of RAS effluents to sustain plant growth under aquaponics condition. Future conversions, rather ‘upgrades’, of operational RAS farms to semi-commercial aquaponic ventures should not be deterred by nutrient insufficiency or nutrient safety arguments. Incentivizing RAS farm wastes through semi-commercial aquaponics is encouraged. Nutrients locked in RAS wastewater and sludge have sufficient and safe nutrients to sustain plant growth under aquaponics condition.
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Parameters & Specifications
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Parameter | Fish Only | Aquaponics |
---|---|---|
Fish FCR | 0.87+/-0.01 | 0.88+/-0.0 |
Lettuce yield (kg/m2) | N/A | 5.77+/-0.19 |
NO3 accumulation (mg/l) | 52.2+/-5.28 | 1.43+/-1.09 |
NO3removal (%) | 0 | 97 |

Aquaponics System Diagram
Aquaponic systems are recirculating aquaculture system that incorporate the production of plants without soil. Recirculating system are designed to raise large quantities of fish in relatively small volumes of water by treating the water to remove toxic waste products and then reusing it. Plants grow rapidly in response to dissolved nutrients that are excreted directly by fish or generated from microbial breakdown of fish wastes.
Well balanced aquaponic system designed for maximum project outputs.
- Applied hi-quality rotary drum filters prior to bio-filters.
Applied hi-efficiency oxygenation systems for high fish biomass low FCR.
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