Re: [Killietalk] Wouldnt agree with...

[Dennis Heltzel <killies at fishroom_net>]

Charles Harrison wrote:

> Actually Chlorine on the back of good clean Charcoal will be 
> chemically changed to Chloride in the open aquatic system given enough 
> time and Oxygen. Most of us who use it though use it so fast that this 
> is not allowed to occur and we must replace it to maintain no 
> chlorine. The rate of the reaction is incredibly slow, but it can get 
> into the way of analytically testing for Chloride in a purified water 
> stream.

What if someone using carbon to filter chlorine were to dose the filter 
with sodium thiosulphate when some chlorine start to punch through? 
Would that have the effect of regenerating the chlorine removal 
capacity? I suppose it might release a lot of ammonia if it had captured 
chloramines and kill all your fish at once.

Dennis Heltzel
(in Pennsylvania)


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