?

Yes.

But I wouldn't flush a toilet with fish living in it.

Yes, if I could swim.

Bing

Sadworld, if your pond soes not have LOTS of bacteria in it already, well, it's dead! Or a freshly clorinated swimming pool!

Sadworld, a lot bacteria manufacturers will have some sort of certification to be human pathogen free. They must provide this certification for export to some other countries. All you have to do is call and ask and they should be able to provide something for you. Personally, I wouldn't worry about it since pond bacteria are the same ones that are naturally occurring in almost all ponds and soils.