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Posted by Charlie Durand on December 14, 2006, 6:05 pm
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Hey there,
I am having trouble with nitrates. They are running around 40ppm.
At what levels do things get toxic for freshwater fish? Specifically the
big cichlids like Oscars and Red Devils.
The nitrates are 40ppm out of the tap by the way.. water changes do nothing.
I'm looking into a reverse osmosis setup.
Thanks!
Charlie
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