Quote:
Originally Posted by lauraleellbp
You have a source for that? Most antibiotics aren't able to tell "good" bacteria from "bad"
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Some antibiotics can tell 'good' bacteria from 'bad' bacteria.
It's commonly know that Erythromycin (maracyn I) kills gram negative type bacteria.
http://en.wikipedia.org/wiki/Gram_negative_bacteria
Gram negative bacteria do not include nitrifying bacteria.
Maracy II on the other hand kills a broad spectrum of bacteria.
Plus, most of us have used Erythromycin without ill effects to the cycle.