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Re: What went wrong
Steve DeMarle wrote:
> I have another bag of eggs from the same pair
> which I plan on dropping tonight. But before I do I was hoping for some
> feedback from the Notho experts on what I may have done wrong. Any help
> would be appreciated.
You don't mention salt, Steve.
Babies, Nothos in particular, are very susceptible to Oodimium (Velvet
Disease) attack. At such small sizes, the parasite is quite invisible,
mostly attacking the gills.
I like to hatch eggs in RO water (higher osmotic pressure to help the
hatch), but add a bit of salt soon after hatching, bringing the tds up to
match my tap water over the next few daily water changes. The salt seems to
suppress replication of the Velvet better than the dissolved stuff in hard
Eventually I switch to 300 ppm tds tap water, but keep adding salt to about
700-900 ppm tds.
About 90% of the time, when I have examined mysterious baby deaths under a
microscope, I find plentiful Oodimium species on the carcasses. That's *my*
best guess, anyway.
Wright Huntley, Fremont CA, USA, 510 494-8679 huntley1 at home_com
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