I counted 11 good answers, good details from experienced and concerned people (not counting the part about the upsidasium for which I did apologize). Lots of good answers given.
Some of us had voiced concern about the safety of the galvanzed stock tanks for growing food. The stock tanks were designed to hold water for animals to drink. If we add soil and plants there is also a chance that some folks may be using chemicla fertilizers. This all has an effect on the galvanized coating. Plain old water is fine in a stock tank, but creating a chemical cocktail could wear away at the coating...and the coating must have to go somewhere...into the soil? then into the plants? I'm not a scientist but I did find a link with some explanations of chemical fertilizer effects on the coating.
http://tru.uni-sz.bg/tsj/vol3N...[1].pdf
