Re: [Killietalk] RO

[vkngbar at ix_netcom.com]

Zinc is a very reactive metal. The reason that fences are coated with the stuff. It will corrode before iron. The reaction of the protects the iron until it is depleted. Some bridgs have zinc rod placed next to the them in the water for the same reason. The zinc reacts before the iron in the process.  Tin roofs are also coated with zinc. 

Look in a chemstry book if you wish to find more references.

Later,

Scott

-----Original Message-----
>From: wusong <wusong at drunkenbastards_com>
>Sent: Oct 10, 2006 10:17 AM
>To: killifish discussion list <killietalk at aka_org>
>Subject: Re: [Killietalk] RO
>
>"When rainfall is adequate, I prefer rain water to RO 
>water, for reasons I don't understand, so I cannot explain it."
>
>:)
>
>I never heard of the zinc rod before.  What purpose does it serve?
>
>-dave S.
> 
>
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