One of the best plants to grow in a small aquaponics stem is watercress. It requires a lesser concentration of nutrients and it is a hardy vegetable and it grows fast. Watercress will also blend and flourish with any type of fishes you may have.
When it comes to choosing the best plant for your small aquaponics system, one thing we suggest is for you to decide to grow what you will eat or use. Having a thought of what you plan on accomplishing will assist you in making a better judgment on what to grow in your small aquaponics system.