The system operates by providing a slow, steady stream of nutrient-rich water to the plant roots. the water is circulated using a combination of pumping and gravity draining. unlike an ebb and flow system, nutrient film aquaponics does not require a flood period – just a consistent flow of water from the fish tank.. In an nft aquaponics system, plants are placed in a narrow channel where a thin film of nutrient solution is allowed to flow over and touch their roots. the thin film of nutrient solution ensures that the majority of the upper roots remain dry and are exposed to air..
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