The document provides an introduction to aquaponics systems. It describes key elements like how nutrient-rich effluent from fish tanks is used to fertigate hydroponic beds, with the plants removing nutrients to benefit the fish. Several example aquaponics systems are summarized, including the early system developed at North Carolina State University in the 1980s linking tilapia tanks and sand-cultured vegetable beds. Research there found aquaponics can conserve water and nutrients while producing fish and organic vegetables using only fish feed as input. Considerations for successful aquaponics include matching the ratio of fish tanks to growing beds and maintaining good water quality.