Raising fish without plants isn’t hydroponics, it’s aquaculture. Plants are equally important to the fish you use in your system, even if they seem much more passive. It’s not as simple as plugging in seeds and transplants, providing nutrients, and waiting until harvest time. Edible crops and ornamental flowers alike can suffer from diseases, pest attacks and even weird genetic mutations or unknown failures. Practicing your general agricultural and horticultural skills will take you a long way in preparing to manage this part of an aquaponics business.