The basic principles of soil-less plant culture are covered in conjunction with a fish production unit. Students produce two crops each year - lettuce in the winter and basil in the spring and summer. The hydroponics system also serves the function of a secondary biological filter for the Tilapia tanks.
![[set up of tanks]](https://www.angelfire.com/ct2/agriscience/images/hydro.jpg)
![[blue line]](https://www.angelfire.lycos.com/doc/images/lines/bluem3d2.gif)