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Copper Sulfate: Not just for lake and pond algae control anymore!
The LoungeOff Topic PG-13. Warning: The Lounge may contain irrelevant and off topic discussions that may not be related to anything HHR. If you are not interested in these kinds of discussions, do not read or respond to these threads.
Surprising enough they are essential for the body. When I was making I.V.s for people who could not eat and received all their nutrition from I.V.s those and other elements were added.
Picked up a jar of the regular good old original Jif tonight. I ain't eatin' all that metal. If I wanted copper added to my peanut butter I'd swallow a penny with it.