Re: [Killietalk] RO advice now viabilty of eggs in hard water

["David sanchez" <barbax66 at peoplepc_com>]

Wright,

Hey I hear you buddy. You did make some good observations and it sparked
some good conversation and it was fish related how about that! I have no
doubt that is what you meant. I have often wrote things and then looked back
and noticed I could have made it more clear. It is a very good observation
and one that I would like to understand more.

"Since all Cardinals seem to be
wild caught these days"

Wright,
On that one I have to say the Jury is still out!. I know for a fact that
Seagrest farms and others are selling ONLY TANK BRED CARDINALS. Feel free to
call them to confirm this. A google search will bring up their website on
which they even list the fish they carry. I am also friends with the owner
of the farm that produces the Cardinals so I know first hand. Crazy the
stuff that is being bred commercially these days. I think it is a very good
thing.



Dave
----- Original Message -----
From: "Wright Huntley" <whuntley at inkmkr_com>
To: "killifish discussion list" <killietalk at aka_org>
Sent: Saturday, January 28, 2006 12:29 PM
Subject: Re: [Killietalk] RO advice now viabilty of eggs in hard water


David,

My apology for a poorly-worded generalization. My experience exactly is
parallel to yours. New species often have lower tolerance for hard
water. Some Aphyos seem to be unable to hatch in it, and some species
refuse to spawn.

I have bred several Apisto species as well as many kinds of wild Bettas.
Most are from the wild or no more than F1, so soft water was essential.

The sequences and situations you describe are why I place a lot of
hard-water stories in the myth category. Since all Cardinals seem to be
wild caught these days, I don't think, if I wanted to breed them, I
would try it in harder water. :-)

Wright

David sanchez wrote:
> "I
> have gotten Neon Tetras to breed in 450 ppm water (300 ppm as CaCO3
> equiv. hardness) so I don't believe a lot of the mythology about hard
> water, any more. "
>
> Wright,
> I am an avid Tetra breeder and I did my High school Science project on
> breeding Cardinal tetras way back when I was in High school. When I did
the
> science project I did a graph detailing the viability of eggs at different
> pH and GH. It was very evident that eggs would not develop past 5 DH and
> those that did died and did not get to freeswimming. Above 6 pH viability
> also tailored off significantly.
>
> As to neon teras almost 99% of the ones you see today are tank bred either
> in the USA or Asia. Something has happened because they do in fact breed
in
> hard water as you have found. I have a species of Dwarf Cichlid which some
> may be familiar with, Taeniacara candidi, which is from Black waters of
the
> Amazon and is rather touchy to breed. Mine after 9 years of being
maintained
> by me are now much easier to breed then when I first started. I have had
> friends tell me they will breed in conditions I would never have dreamed.
> Angels, Discus, Killies etc etc Why this dynamic happens has always
puzzled
> me.
>
>
> "I don't believe a lot of the mythology about hard
> water, any more."
>
> Wright,
>
> I have been working with Soft water fish all my life and I must say I feel
> with wild fish that statement does not hold up. Time and again I can tell
> you how this will affect viability of eggs. I will tell you this cardinal
> tetra eggs will simply not develop in water with anything above 5 DH, and
> anything above 1 DH we see a significant lowering of viability. I do not
see
> any myth here Wright.  But perhaps we are seeing an adaptation or maybe
even
> some sort of evolution by our fish that are tank bred? This is a something
> that has puzzled me for years. If anyone has a reasonable explanation on
why
> Tank bred fish will eventually adapt to a wider range of water conditions
I
> would love to hear it.
>
> Dave


--
Wright Huntley - Rt. 001 Box K36, Bishop CA 93514 - whuntley at verizon_net
  760 937-2276 (mobile) 760 874-2000 (CA) or 941 866-0500 (FL).

“A journey of a thousand miles starts with an airline ticket.
Unless you’re crazy” -- Chad Carter.

http://www.self-gov.org/wspq.html


Join the AKA at http://aka.org/modules/tinycontent0/index.php?id=9
Archives are at http://fins.actwin.com/killietalk/
Modify your subscription at
http://www.actwin.com/mailman/listinfo.cgi/killietalk

Join the AKA at http://aka.org/modules/tinycontent0/index.php?id=9
Archives are at http://fins.actwin.com/killietalk/
Modify your subscription at http://www.actwin.com/mailman/listinfo.cgi/killietalk