Re: [RML] Re: Filtering tap water (was unhappy xmas)

Wright Huntley (huntley1 at home.com)
Mon, 01 Jan 2001 20:56:24 -0800

PETER.UNMACK at ASU.Edu wrote:
>
> On Wed, 27 Dec 2000, Chuck Gadd wrote:
> > PETER.UNMACK at ASU.Edu wrote:
> > >
> >
> > > Why not just use sodium thiosulphate if you are worried about the cost? It's
> > > a lot cheaper than commercial preperations.
> >
> > It won't deal with chloramine. It will leave free ammonia.
>
> Yes, it deals with chloramines (Phoenix water is full of it). If it does
> leave any free ammonia then it has never been a problem with anyone I've known
> who uses it.

I know of several major fishroom kills using it (literally thousands of dead
fish!), and low-level ammonia is very damaging to fish, even when it does
not kill them. [See Spotte's book for examples.] I also have encountered a
dozen or more smaller fishroom problems caused entirely by using hypo-based
dechlorinators on chloramine.

NEVER use sodium thiosulphate on chloramine unless you can subsequently
store the water and vigorously aerate the ammonia out to the atmosphere.

That's my US$0.02.

Wright

-- 
Wright Huntley, Fremont CA, USA, 510 494-8679  huntleyone at home dot com


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