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A comment on Hacker increased chemical level at Oldsmar's city water system, sheriff says. Parent comment

Re:Hacker increased chemical level at Oldsmar's city water s... by genewitch on Monday February 08, 2021 @10:38PM (#26073520)
Fish tanks require copper to maintain proper levels of nitrifying bacteria, the first two nitrifying stages require copper to convert stuff to the "safe" nitrogen that requires flushing to remove (unless you have real plants in the aquarium, then you rarely need water changes) - furthermore, copper is used to cure several fish diseases[0], so it it's impossible to be as bad as you claim.

[0]https://smile.amazon.com/Seachem-67105650-Cupramine-Copper-1... for example

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Re:Hacker increased chemical level at Oldsmar's city water s... by pvaldes on Tuesday February 09, 2021 @10:53AM (#26078897)
This is a myth. Fish tanks definitely don't require a surplus of copper. Not unless they are hospital tanks. I have experience using copper to cure fish diseases and cant guarantee you that is a notoriously treacherous stuff to work with it
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