That information was taken almost verbatim from this scientific study Growth of Nitrosomonas europaea in batch and continuous culture (Skinner & Walker 1960) I read it to mean that both bacteria specie are stimulated by Copper, but at 0.20 ppm and above Nitrosomonas is inhibited while Nitrobacter is still stimulated at least to levels of 0.50 ppm.
Sometimes these scientists don't quite speak the same language as the rest of us.

Last edited by Instar; 01/07/12 12:51 AM.