RE: [Killietalk] Any soft water Nothos

[David Sanchez <barbax2 at yahoo_com>]

Brian et al,
Thank you for your wisdom and experience. I have long
wanted to know about the native waters of Nothos.

Dave

--- Brian Watters <bwatters at sasktel_net> wrote:

> David Sanchez wrote:
> 
> >
> >I was under the impression these were, rainwater,
> >temporary pools they lived in? Is that water not
> soft
> >and acid?
> >
> 
> The average Total Dissolved Solids (TDS) content of
> the water in all the
> Notho localities that I have investigated (a few
> hundred) is 95 ppm, which
> is quite soft. However, the water is invariably
> alkaline, the avarage pH
> being 7.4. When the pool fills up the water leaches
> Ca and Mg from the
> substrate, keeping the water alkaline. The very few
> Notho habitats that have
> acidic water are almost always those that have a
> large amount of decaying
> vegetation in them and the consequent acidification
> exceeds the buffering
> capacity of the substrate.
> ________________________________________
> Brian Watters
> 56 Gardiner Avenue
> Regina, Saskatchewan S4S 4P6, Canada
> Tel: (306) 584-9161 (home)
> E-mail: bwatters at sasktel_net
> 
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