On 25/04/2010 14:29, S Viemeister wrote:

Sounds like this stuff -

http://en.wikipedia.org/wiki/Iron_bacteria
http://www.hhs.state.ne.us/enh/IronSulfurBacteria.pdf

If it is, raising the temperature should help get rid of it.

Sort of like the foundary scene at the end of the Terminator movies ;-)

--
Adrian C