Sulfer Denitrators

[Ereefic]

I thought I saw you post about these before, but couldn't find the threads. Feel free to link me to them.

From what I remember (and I could be way off), you said they can deplete Alk., so that needs to be kept up and the build up of sulfer in the system isn't really something to worry about. Did I miss anything and are those correct?

[Randy Holmes-Farley]

Yes, sulfur denitrators can deplete alkalinity, produce a small pH lowering effect, and increase sulfate a small amount. I discuss these issues a bit here:

Nitrate in the Reef Aquarium
http://www.advancedaquarist.com/issues/august2003/chem.htm