First off, let me say this not my area of expertise. This is one subject I know enough about to be dangerous.:D
However, I have not seen any threads about water treatment so I thought we should just go ahead and start a thread and see what happens.
This is being started in the NH3 forum, but would equally apply to other water-cooled systems.
http://www.advancedh2o.com/technical...ion_Copper.pdf
http://en.wikipedia.org/wiki/Cooling_tower_system
http://www.gc3.com/srvccntr/cycles.htm
http://en.wikipedia.org/wiki/Hard_water
If anyone else has something to contribute, I'm sure this would be a good place to help others.
Personally, from what I've seen of water treatment programs it all sounds like a witches brew, but I think we can get this down to some basic facts to help others.