I really enjoy comprehensive systems like these.  Brilliant bit of engineering.

Denver’s aquaponics project aims to turn “food desert” into an oasis of health

By Colleen O’Connor
The Denver Post

A dilapidated greenhouse in Denver’s Elyria-Swansea neighborhood could soon sprout one of the nation’s newest trends: inner-city farming using state-of-the-art technology to grow crops and fish in a single symbiotic system that mimics nature’s water cycle.