With minimum inputs, aquaponics counts as sustainable. every component produced is vital for the survival of the entire system. on the opposite, hydroponics needs a liquid solution, and you have to refill it continuously, so it doesn’t count as sustainable.. Saving water is one of the biggest advantages in aquaponic compared to hydroponics. aquaponics saves 95% of the water it uses, as you never replace the water. while water is regularly discharged in hydroponic systems to remove toxins and wastes, aquaponic culture requires only topping off water to compensate for the evaporated water..
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