Grow your own vegetable and fish at the same time, with an Aquaponics system.
Aquaponics is the combination of Aquaculture (growing fish to eat) and Hydroponics (growing vegetables in a non-traditional way, using water).
Aquaponics uses the water and nutrients used in the fish tank to feed and grow your vegetable and plants. It basically uses a hydroponic system and instead of chemicals, it actually uses naturally sustainable fish waste as nutrients instead of the chemical fertilizers. These nutrients are filtered through the plants which works as a water filter for the fish, it is set up as a true ecosystem.
Below is a link to Travis Hughey’s E-book instruction manual & a video.