Re: [APD] Fun with numbers

["S. Hieber" <shieber at yahoo_com>]

Sure. Consider our plants. Some of them grow underwater
naturally but naturally you won't compressed CO2 tanks.

Naturally adapting well enough for the species to persist
in a given nautral set of conditions does not entail that
those conditions are necessarily the best or only
conditions for that species.

sh

--- Liz Wilhite <satirica at gmail_com> wrote:

> On 10/1/05, Tom Wood <tomwood2 at flash_net> wrote:
> >
> >
> > According to some online research, the internal body
> chemistry of most
> > freshwater fish is basically the same when it comes to
> osmoregulation.
> > This
> > would suggest that the opposite GH and/or TDS
> recommendations for discus
> > and goldfish must be based on something other than
> osmoregulation.
> > Breeding
> > needs? In any case, I'm having no trouble keeping
> goldfish in a high-tech
> > tank with much softer water than conventional wisdom
> dictates. Unless they
> > suddenly spontaneous combust, or something...
> 
>  The guy who owns the LFS has been breeding all sorts of
> fish for 40 some
> years including discus. He does it in plain old tapwater,
> pH 7.2 with KH and
> GH readings in the 5 - 9 degree range depending on the
> time of year. I've
> got F0 and F1 lamprologus brevis thta are breeding in a
> tank with a pH
> running around 7.3 with KH about 7 and GH about 4 --
> pretty danged different
> than Lake Tanganyika.
>  I think a lot of what we "know" about fish is simply not
> true. We shouldn't
> assume that simply because fish are found in water with a
> particular set of
> parameters means they do best in water with those
> parameters. That's
> considered heresy to most people though.
>  Liz
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> 

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