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Re: Hardness and TDS
Bill Shenefelt wrote:
>... Aside from the cost and
> practicality from a range standpoint, is the bad actor for killies just the
> calcium content?
Bill, I think you asked a million dollar question. No, this is NOT my final
The Ca-bad thing is anecdotal, AFAIK. It would be nice to know what *is*
happening. In the US, most Ca is accompanied by some reasonable level of Mg,
It seems to me that I have gotten almost all (non-wild or F1) killies and
Bettas to breed in local tap water that has run as high as 300 ppm hardness
as CaCO3 equivalent, and the eggs have hatched in it. I have even gotten
neon-tetra babies in that water! Tds was over 450 ppm!
I just pulled a couple of eggs from some F2(?) *A. aff. microphthalmum* TDK
97/2 and the water measures 430 ppm tds. IDK if there would have been three
or four in softer water. [The snails are beating me to most eggs, anyway.]
It seems getting eggs is a whole lot easier with some *wild* fish (killies,
Apistos, Bettas, etc.) with softer acid water, with a substantial amount of
organic matter present. It seems (with less certainty) that those eggs hatch
better in that kind of water, too. [BTW, the MIP water is stained tea color
OK. That's my addition to the anecdotal data bank. Surely, someone has done
some studies on these things and published them. It would be nice if
someone, less lazy than yours truly, could do a literature search and see
what is known, rather than what is suspected.
Science-Fair project, anyone?
Mystified on the Left Coast,
Wright Huntley, Fremont CA, USA, 510 494-8679 huntleyone at home dot com
There are two rules for success in life:
Rule 1: Don't tell people everything you know.
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