Nutrients are one of the most exciting and yet still mysterious aspects of aquaponics. For fish, this is mainly related to food, which the grower provides. For plants, the nutrients primarily come from the food provided to the fish. However, some amendments such as iron, calcium, and potassium may be needed as these nutrients not usually found in fish food.
There are 5 key elements of an aquaponics system. Each of these are necessary to run a successful aquaponics system. We'll go over each of these elements in detail below. The 5 key elements of an aquaponics system are 1) Grow Bed, 2) Fish Tank, 3) Fish, 4) Plants, 5) Bacteria.