Fish farming in the desert brings millions to farmer.

A farmer has made millions from fish farming in the desert using sustainable farming technique,the aquaponic system. In the desert where water is scarce, some experts are pushing for a process called aquaponics, where the wastewater from the fish is used to fertilize crops. Rush,a farmer sees fish farming not just as a way to make money, but also to save money by reusing the fish water on the 500 acres of Bermuda grass crop he grows nearby. The fish put waste in the water, which eventually turns into nitrates, a big ingredient in fertilizer. Rush said he saves more than $100,000 a year on fertilizer by using this nutrient-rich water. And, he gets double the use from costs of pumping groundwater from his wells. More