The produce isn't grown with any toxins, pesticides or sprays because the aquaponics system relys on ammonia, nitrates, nitrites and microbes to all do their job, in the conversion process of nourishing the produce. The fish do their part in creating some of these natural chemicals through their gills, skin and poop. If there were any questions about the natural processes being harmful, then the fish would die because they are very sensitive to stress and chemicals. http://www.amazon.com/
If people want to save money and learn how to grow their own food through aquaponics; a great start would be a subscription to the ASC Magazine. The magazine comes out on the 10th of every month and it has a vast array of educational materials in it. The magazine articles are designed to give people great ideas with having succesful aquaponic systems themselves. http://aquaponics-
If you have an interest in learning aquaponics and would like to subscribe to the magazine then click on the link within this article. You can also purchase your copy of the Essential Fish Care In Aquaponics by purchasing the book directly on Amazon Kindle or through the link supplied.