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[APD] Re: Lost an oto, not sure why
Michael Skidmore is having trouble with his Otocinclus:
If the tests are correct, NO2 killed your Oto and will kill all the
others if not dealt with quickly. In my experience, Otos are *very*
sensitive to any amount of nitrite. And though your other fishes may
seem ok, they are probably stressed as well; nitrite is highly toxic.
I suggest a series of large water changes to keep the nitrite as low
as possible (get a dependable kit -- Hach or LaMotte -- if you can
afford it. Hach's nitrate test kit, NI-14, can also test for nitrite
btw). Ask your LFS if they can give you some seasoned floss or
something from a mature filter, and add it to yours. You can also
add Seachem Prime per label instructions to keep the NO2 sequestered.
I don't have much faith in the "bacteria boosters" that are sold, so
I would not depend on them too much.
You should try and determine what the source of the NO2 is. IME, it
is very unusual to find nitrite in a fully planted tank no matter how
newly set up it is.
Best of luck to you and your Otos.
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