"alex pastor" <alexp@idirect.com> wrote: <<<< Subject: Metronidazole Does this drug knock out the de-nitrifying beneficial bacteria? >>>>>> In theory it should not, in reality normally it does not, but I heard of rare reports of problems with the biofilter associated with metronidazole use. So, nothing to worry about, but as usual keep an eye on the tank when using medications. Dionigi Maladorno dionigi.maladorno@roche.com This message presents personal opinions which are not necessarily those of my employer. ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!