Aquaponics is where fish and plants are grown in a combined system. the system uses nutrient rich water provided by the fish and circulates it through to a grow bed to feed the plants. aquaponics works with the aid of the good bacteria in your ponds. fish produce waste and ammonia in the pond, which is toxic to them.. Let's great straight into growing winter vegetables and winter fruit in aquaponics in uncontrolled environment in harsh weather of melbourne, australia. when i say environment is not controlled then it means that it is not located inside a greenhouse. i am growing them in a pond filter located directly outside under clear sky..