Wow, I really appreciate all of your checking into it for me...I plan on scrubbing everything down tomorrow, and re plumbing the tank. A lfs
told me I would "probably" be ok just leaving as it is, or if I am concerned to try putting another layer of silicone over the top of the existing silicone, sealing the copper in, and keeping the integrity of the tank...the lfs
also thought the possible amount of copper that could be left over would be next to nothing.
Does anyone know if there is a test to find the copper? take a little silicone off and mix it with another chemical that would produce a reaction? Hopefully there is a chemist out there!
Thanks a ton to everyone, and Feron, thanks for all of the research! I plan on looking closely at the silicone once it is all clean and see if there is any tint to it, to help me assess what kind of problem I may be facing.