Are After the deadly E. coli O157:H7 outbreaks linked to romaine lettuce in the past few years, many people have turned to hydroponic greens and aquaponic greens. Those plants are grown in water or recycled fish waste water instead of soil, indoors in greenhouses so they are not exposed to animal and bird waste, ground water, and irrigation water. But are aquaponic hydroponic greens safer? A new study finds there are risks. The study was conducted by scientists at Purdue University and published in MDPI, a publisher of peer-reviewed, open access journals. It is The Occurrence of Shiga Toxin-Producing E. coli. in Aquaponic and Hydroponic Systems. Hydroponic systems use water as the medium for growing the plants. Aquaponic systems use fish wastewater as both the water and nutrient … [Read more...]