Spehro Pefhany ha scritto:

> THE major use of FeCl is for water treatment (as a flocculant), so I don't
> think it's so bad (legality/illegality aside for the purposes of a
> theoretical discussion). But the Cu contamination
> can harm the useful microbes in a septic tank, which would not be nice.

[...]

thank you Spehro.
Indeed, it was causing big stains :)


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Ciao, Dario
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Cyberdyne
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