philhawk i know this does not really apply to your question but i found it a very interesting article of the effects of water on galvanized metal...just thought i would share...
http://www.galvanizeit.org/showContent,276,320.cfm
good luck with your temp tank with the epoxy coating you would have zero problems...IMO
http://www.galvanizeit.org/showContent,276,320.cfm
good luck with your temp tank with the epoxy coating you would have zero problems...IMO