How to Build a Solar Aquaponic System with Plastic Bottles

Grow fish and vegetables together in this cheap, efficient, portable DIY system

As the word aquaponics itself suggests, we grow plants and fish symbiotically together in an aquaponic system (Figure 1 & Video 1). In it, fish live in an aquarium and the hydroponic plants thrive in a grow bed. Water flows through the two containers with the help of a water pump. Once established, this system requires minimal input: sunlight, some water, backup power, and fish food. Fish discharge…