I would like to bring this interesting topic posted some time back forward for a debate. : how to establish the sex of a koi
http://www.yumekoi.com/images/stories/pdfs/Male-or-Female.pdf
One of the comments made in the article about the use of clay and raising Jumbo Koi
"Quote"
If on the other hand you raise a koi
in harder water, or you choose to use a
lot of clays or other mineral additives,
the koi will reach its peak much earlier
in life. Whereas these clays and mineral
additives are great for conditioning koi
for shows, they also limit the growth of
the koi. If raising koi in such a manner,
it is almost pointless trying to make it
Jumbo as the condition of the koi will
be on the decline a long time before it
gets big!
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