Nutrient dynamics of an aquaponic system in southern thailand. somsak maneepong. 1. 1. school of agricultural t echnology, w alailak university, nakhon si thammarat, thailand .. Nutrients added to the aquaponics system consisted of iron, manganese, and zinc. these nutrient concentrations became depleted in the aquaponics water over time and were not replenished via the fish feed. dolomite was added to the aquaponics system every two weeks to increase the buffering capacity of the water and maintain optimal ph levels..
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