I was with a group of friend's last night and we were talking about our gardens and our pets, and the subject of aquaponics came up. I was curious as I didn't even know about this practice of raising or growing fish in a type of recirculation system.
The fish consume food and excrete waste, that produces a nutrient-rich solution in the water in which plants thrive on.
The plants take in the nutrients through their roots and at the same time the plants help to purify the very water in which the fish live and return the clean water to the fish tank.
Somehow the tanks are set up in such a fashion to allow the water at one end to be pumped from the fish tank, where it enters a growing and floating bed. Gravity pulls the waste through a gravel bed, feeding the bacteria, which in turn feeds the plants. The clean water is then returned to the fish tank.
The only time I was aware of plants that help purify water was in Florida, where the Water Hyacinth (Eichhornia crassipes), serves that same purpose in the canels and waterways, while it takes over the span
of the entire canel or old river channel.
Does anyone here know about this system of recycling fish tank water in such a fashion that both plants and fish benifit?
Aquaponics Use Of Tank Water For Plants 
