>I'd also be concerned that the produce would lack micro nutrients because the system is artificial.

Plant nutrition isn't that complex. Plant nutrition deficiencies are easy to diagnose and easy to treat. It only takes a few drops of say, molybdenum to give an entire field all micro-nutrient it needs.

There is no vital essence to micro-nutrients that are lost in a potted plant or aquaponics. It is simply a formula for nutrition, where a plant needs quantities fulfilled to be healthy.